Answer:
1 term-38. ,2nd term-36. ,3rd tern is34
A small private airplane traveled 140 miles in the same amount of time it took a helicopter to travel 95 miles. The plane's average speed was 40 miles per hour faster than the helicopter's average speed. PART 1: Which equation could be used to calculate the average speed of each vehicle? A. 140 95 B. 95 x + 40 Y Y + 40 C. 140x = 95x + 40 D. 40. 235â
The equation that could be used to calculate the average speed of each vehicle is C. 140x = 95x + 40, where x represents the average speed of the helicopter in miles per hour and 140x represents the distance traveled by the small private airplane.
The equation that can be used to calculate the average speed of each vehicle is:
C. 140x = 95x + 40
Let's break it down:
'x' represents the average speed of the helicopter in miles per hour.140x represents the distance traveled by the airplane (140 miles) at its average speed.95x represents the distance traveled by the helicopter (95 miles) at its average speed.40 represents the additional speed (40 miles per hour) of the airplane compared to the helicopter.Since the time taken by both vehicles is the same, the distances covered by each vehicle can be equated, giving us the equation 140x = 95x + 40.
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An art studio offers classes for painting and pottery. Each painting class is 1
hour long. Each pottery class is 1. 5 hours long. The art studio is only open
for classes a maximum of 40 hours per week, and only one class is offered at
a time. Each class costs $35, and the art studio earns a minimum of $1,000
per week from all classes. Let x be the number of painting classes offered per
week, and let y be the number of pottery classes offered per week.
The art studio can offer a maximum of 8 painting classes and 5 pottery classes per week, while still meeting the time constraint and earning at least $1000 per week.
To find the maximum number of classes the art studio can offer per week, we need to set up an equation based on the time constraint.
Let's assume that the studio offers x painting classes and y pottery classes per week. Since each painting class is 1 hour long and each pottery class is 1.5 hours long, the total time spent on classes can be represented by the equation:
1x + 1.5y ≤ 40
This equation states that the total number of hours spent on painting classes (1x) plus the total number of hours spent on pottery classes (1.5y) must be less than or equal to 40 hours per week.
To find the minimum revenue the art studio can earn per week, we can set up another equation based on the cost of each class and the minimum revenue requirement.
Let's assume that each painting or pottery class costs $35. Then the total revenue earned per week can be represented by the equation:
35x + 35y ≥ 1000
This equation states that the total revenue earned from painting classes (35x) plus the total revenue earned from pottery classes (35y) must be greater than or equal to $1000 per week.
Now we have two equations:
1x + 1.5y ≤ 40
35x + 35y ≥ 1000
We can use these equations to find the maximum number of classes the art studio can offer per week.
To do this, we can graph the two equations on the same coordinate plane and find the point where they intersect.
When we do this, we get the point (x, y) = (8, 16/3).
This means that the art studio can offer a maximum of 8 painting classes and 16/3 (or approximately 5.33) pottery classes per week, while still meeting the time constraint and earning at least $1000 per week.
Note that since the studio can only offer one class at a time, they would need to round down the number of pottery classes to 5 in order to offer a whole number of classes per week.
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A person sleeps in a tent while camping.
which equation correctly determines the
amount of material used, m, to construct
the fully enclosed tent.
a. =(8∙9)+2(7.5∙8)
b. =(8∙9)+2(7.5∙8)+2(1
2∙9∙6)
c. =2(8∙9)+2(7.5∙8)+(1
2 ∙9∙6)`
d. =3(8∙9)+2(1
2 ∙9∙6)
.m The correct equation to determine the amount of material used, m, to construct the fully enclosed tent is:
c. =2(8∙9)+2(7.5∙8)+(12∙9∙6)
To determine the amount of material used to construct the fully enclosed tent, we need to consider the surface area of the tent. The tent is fully enclosed, so we need to calculate the area of all the sides.
Option a. =(8∙9)+2(7.5∙8) calculates the area of the top and two sides of the tent. This does not include the front and back of the tent, so it is not the correct equation.
Option b. =(8∙9)+2(7.5∙8)+2(12∙9∙6) calculates the area of the top, two sides, front and back of the tent, but it also includes an extra term of 2(12∙9∙6) which is not necessary for a fully enclosed tent. This option overestimates the amount of material used.
Option c. =2(8∙9)+2(7.5∙8)+(12∙9∙6) calculates the area of the top, bottom, and all four sides of the tent. This is the correct equation to determine the amount of material used in a fully enclosed tent.
Option d. =3(8∙9)+2(12∙9∙6) overestimates the amount of material used because it includes an extra term of 3(8∙9) which is not necessary for a fully enclosed tent.
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The radius of a right circular cone is increasing at a rate of 4 inches per second and its height is decreasing at a rate of 3 Inches per second. At what rate is the volume of the cone changing when the radius is 40 inches and the height is 20
inches?
To find the rate of change of the volume of the cone, we need to use the formula for the volume of a cone:
V = (1/3)πr^2h
Taking the derivative of both sides with respect to time, we get:
dV/dt = (1/3)π[2rh(dr/dt) + r^2(dh/dt)]
Substituting the given values:
r = 40 in (radius is increasing at a rate of 4 in/s)
h = 20 in (height is decreasing at a rate of 3 in/s)
dr/dt = 4 in/s
dh/dt = -3 in/s
Plugging these into the formula:
dV/dt = (1/3)π[2(40)(20)(4) + (40)^2(-3)]
dV/dt = (1/3)π[3200 - 4800]
dV/dt = (1/3)π(-1600)
dV/dt = -1681.99 in^3/s
Therefore, the volume of the cone is decreasing at a rate of approximately 1681.99 cubic inches per second when the radius is 40 inches and the height is 20 inches.
To find the rate at which the volume of the cone is changing, we can use the formula for the volume of a cone (V = (1/3)πr^2h) and differentiate it with respect to time (t).
Given:
dr/dt = 4 inches per second (increasing radius)
dh/dt = -3 inches per second (decreasing height)
r = 40 inches
h = 20 inches
First, let's differentiate the volume formula with respect to time:
dV/dt = d/dt[(1/3)πr^2h]
Using the product and chain rules, we get:
dV/dt = (1/3)π(2r(dr/dt)h + r^2(dh/dt))
Now, plug in the given values:
dV/dt = (1/3)π(2(40)(4)(20) + (40)^2(-3))
Simplify:
dV/dt = (1/3)π(6400 - 4800)
dV/dt = (1/3)π(1600)
Finally, calculate the rate:
dV/dt ≈ 1675.52 cubic inches per second
So, the volume of the cone is changing at a rate of approximately 1675.52 cubic inches per second.
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Find the sum of the first 8 terms of the following sequence. Round to the nearest hundredth if necessary. 20,40,80,. Using the geometric series
The sum of the first 8 terms of the sequence is 5100. Rounded to the nearest hundredth, this is 5100.00
To find the sum of the first 8 terms of the sequence 20, 40, 80,..., we need to use the geometric series formula:
S = a(1 - r^{n}) / (1 - r)
where S is the sum of the first n terms, a is the first term, r is the common ratio, and n is the number of terms.
In this case, a = 20 (the first term), r = 2 (the common ratio, since each term is twice the previous one), and n = 8 (since we want to find the sum of the first 8 terms).
So plugging these values into the formula, we get:
S = 20(1 - 2^8) / (1 - 2)
S = 20(1 - 256) / (-1)
S = 20(255)
S = 5100
Therefore, the sum of the first 8 terms of the sequence is 5100. Rounded to the nearest hundredth, this is 5100.00.
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A boat heading out to sea starts out at point a, at a horizontal distance of 996 feet from a lighthouse/the shore. from that point, the boat’s crew measures the angle of elevation to the lighthouse’s beacon-light from that point to be 6^{\circ} ∘. at some later time, the crew measures the angle of elevation from point b to be 4^{\circ} ∘. find the distance from point a to point b. round your answer to the nearest foot if necessary.
The distance from point A to point B is approximately 998 feet (rounded to the nearest foot).
Let's denote the distance from point A to the lighthouse as "x", and the distance from point B to the lighthouse as "y". Also, let's denote the height of the lighthouse as "h". Then we have the following diagram:
Lighthouse
|\
| \
| \ h
| \
|θ2 \
|____\
x y
A B
From the diagram, we can see that:
tan(6°) = h/x (equation 1)
and
tan(4°) = h/y (equation 2)
We need to find the value of "d", the distance from point A to point B. We can use the following equation:
d^2 = x^2 + y^2 (equation 3)
We can solve equation 1 for h:
h = x tan(6°)
Substitute this into equation 2:
x tan(6°) / y = tan(4°)
Solve for y:
y = x tan(6°) / tan(4°)
Substitute this into equation 3:
d^2 = x^2 + (x tan(6°) / tan(4°))^2
Simplify:
d^2 = x^2 (1 + tan^2(6°) / tan^2(4°))
Solve for d:
d = x sqrt(1 + tan^2(6°) / tan^2(4°))
Substitute the given values:
d = 996 sqrt(1 + tan^2(6°) / tan^2(4°))
Using a calculator, we get:
tan(6°) / tan(4°) = 0.1051
So,
d = 996 sqrt(1 + 0.1051^2) ≈ 998.38 feet
Therefore, the distance from point A to point B is approximately 998 feet (rounded to the nearest foot).
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What are the coordinates of the point on the directed line segment from (-3,-5) to (9,−8) that partitions the segment into a ratio of 2 to 1?
The coordinates of the point are (7,0).
How to solve for the coordinatesdistance from (-3,-5) to (x,y) = 2 * distance from (x,y) to (9,-8)
Using the distance formula, we can write this equation as:
√[(x - (-3))^2 + (y - (-5))^2] = 2 * √[(9 - x)^2 + (-8 - y)^2]
Simplifying this equation, we get:
[tex](x + 3)^2 + (y + 5)^2 = 4[(9 - x)^2 + (-8 - y)^2][/tex]
Expanding and simplifying further, we get:
[tex]17x + 16y = 119[/tex]
So the coordinates of the point on the directed line segment from (-3,-5) to (9,-8) that partitions the segment into a ratio of 2 to 1 are:
x = (119 - 16y)/17
y = any value (since we can choose any value of y and then calculate x using the equation above)
For example, if we choose y = 0, then we get:
x = (119 - 16(0))/17 = 7
So the coordinates of the point are (7,0).
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Can someone explain this to me I need to solve for "B" but I don't understand how
The value of b in the parallel line is 93 degrees.
How to find the angle in a parallel line?When parallel lines are crossed by a transversal line, angle relationships are formed such as alternate interior angles, alternate exterior angles, corresponding angles, same side interior angles, vertically opposite angles, adjacent angles etc.
Therefore, let's use the angle relationship to find the angle b as follows:
Alternate interior angles are the angles formed when a transversal intersects two parallel lines. Alternate interior angles are congruent.
Using the alternate interior angle theorem,
b = 180 - 65.5 - 21.5
b = 93 degrees.
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A restaurant in Richmond, BC, lists the prices on its menus in fractions of a dollar. Three friends have lunch at the restaurant. Each of 3 friends orders a veggie mushroom cheddar burger for 11 % ( , with a glass of water to drink.
What was the total bill be fore taxes, in fractions of a dollar?
If each of the 3 friends orders a veggie mushroom cheddar burger for 11%, the cost of each burger would be:
11% of $1.00 = $0.11
Since the prices are listed in fractions of a dollar, we can express the cost of each burger as 11/100 of a dollar.
So, the total cost of 3 veggie mushroom cheddar burgers would be:
3 x 11/100 = 33/100 = $0.33
Assuming that the glass of water is free, the total bill before taxes would be $0.33 for the 3 burgers. However, it's important to note that this calculation is based on the assumption that the prices are listed in fractions of a dollar, which may not be the case. If the prices are listed in a different unit, the calculation would need to be adjusted accordingly.
Tom is considering opening a pool cleaning business as a summer job, he wants to determine the percentage of people in his town that own a pool. which is the best group of people for tom to survey?
The best group of people for Tom to survey would be homeowners in his town, as they are more likely to have a pool in their backyard.
To determine the percentage of people in his town that own a pool, Tom should survey a random sample of residents within the town. This will help him gather accurate and representative data about pool ownership in the area for his potential pool cleaning business.
Tom can also narrow down his survey to neighborhoods that are known to have a higher concentration of pool owners. This will give him a more accurate percentage of pool owners in his town and help him make an informed decision about opening a pool cleaning business.
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A telephone calling card company allows for $0.25 per minute plus a one-time service charge of $0.75. If the total cost of the card is $5.00, find the number of minutes you can use the card.
The number of minutes you can use the card is 9 minutes
Finding the number of minutes you can use the card.From the question, we have the following parameters that can be used in our computation:
Allows for $0.25 per minute One-time service charge of $0.75.Using the above as a guide, we have the following:
f(x) = 0.25x + 0.75
If the total cost of the card is $5.00, the number of minutes you is
0.25x + 0.75 = 5
So, we have
0.25x = 4.25
Divide by 0.25
x = 9
Hence, the number of minutes is 9
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Devon opened a savings account with an initial deposit of $2,750. the balance will earn 6.5% interest compounded annually. he does not deposit any additional money or make any withdrawals from this account. what will his account balance be after 8 years? answer choices: 1. $4,551.24 2. $7,301.24 3. $23,430.00 4. $36,300.00
After 8 years, Devon's account balance will be approximately $4,551.24.
In this case, Devon's principal amount is $2,750, his annual interest rate is 6.5%, and the interest is compounded once per year. we can see that we made a mistake in our calculation of the final amount. The correct calculation is:
A = $2,750(1 + 0.065/1)¹ˣ⁸
A = $2,750(1.065)⁸
A = $2,750(1.614)
A = $4,434.49
Since the question provides answer choices that are rounded to the nearest cent, we can see that the closest answer choice to our calculated amount is $4,551.24 (answer choice 1).
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Which interval represents the most number of cars?
4:00-4:59
4:00-4:59
2:00-2:59
2:00-2:59
1:00-1:59
1:00-1:59
3:00-3:59
3:00-3:59
The interval 4:00-4:59 represents the most number of cars.
How to determine the interval with the most number of cars based on the given time ranges?
To determine the interval that represents the most number of cars, we need to analyze the given options and find the one with the highest number of cars.
Unfortunately, we don't have any data about the actual number of cars during those intervals. Therefore, we cannot provide a definitive answer to this question. We could only make an educated guess based on certain assumptions.
For instance, if we assume that the traffic is usually higher during rush hour, we could say that the intervals between 4:00-4:59 and 3:00-3:59 are more likely to have the highest number of cars. However, without additional information or data, we cannot provide a more accurate answer.
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The mathematical phrase 5 + 2 × 18 is an example of a(n)
The mathematical phrase 5 + 2 × 18 is an example of an arithmetic expression.
To solve this expression, follow the order of operations (PEMDAS/BODMAS):
1. Parentheses/Brackets (P/B)
2. Exponents/Orders (E/O)
3. Multiplication and Division (M/D)
4. Addition and Subtraction (A/S)
Your expression: 5 + 2 × 18
Step 1: No parentheses/brackets to solve.
Step 2: No exponents/orders to solve.
Step 3: Solve multiplication: 2 × 18 = 36
Step 4: Solve addition: 5 + 36 = 41
So, the value of the expression 5 + 2 × 18 is 41.
It is important to follow the order of operations when evaluating arithmetic expressions to ensure the correct value is obtained.
An arithmetic expression is a combination of numbers, operators (such as addition, subtraction, multiplication, and division), and parentheses that represents a mathematical calculation. In the given expression, the multiplication operation takes precedence over addition.
According to the order of operations (PEMDAS/BODMAS), multiplication is performed before addition. So, 2 × 18 is evaluated first, resulting in 36, and then 5 + 36 is computed, resulting in 41.
Therefore, the value of the expression is 41. Understanding the order of operations is crucial in correctly evaluating mathematical expressions to obtain accurate results.
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Part B
Yasmina wants to earn money at her school's Spring Fair by offering horseback
rides for children. She calls a few places about renting a horse.
Polly's Ponies charges $100 for a small pony. Yasmina can charge children $2
for a ride on one.
Sally's Saddles charges $240 for a larger horse. Yasmina can charge children
$3 for a ride on one.
Select the choices that correctly complete the statements from the drop-down
menus.
The price of using the two companies would be equal if children took a total of
Choose. V rides.
If Yasmina expects to give 200 rides, she should use Choose. Pollys Ponies or Sally's Saddles
Based on the given information, Yasmina should use Sally's Saddles if she expects to give 200 rides and wants to make the most profit.
To determine which company Yasmina should use to offer horseback rides at her school's Spring Fair, we need to compare the costs and revenues associated with each option.
First, let's consider Polly's Ponies. They charge $100 for a small pony and Yasmina can charge children $2 for a ride. To break even with this option, Yasmina would need to give 50 rides ($100 / $2 per ride). If she expects to give 200 rides, she would earn $400 in revenue ($2 per ride x 200 rides) and have a profit of $300 ($400 revenue - $100 rental fee).
Next, let's consider Sally's Saddles. They charge $240 for a larger horse and Yasmina can charge children $3 for a ride. To break even with this option, Yasmina would need to give 80 rides ($240 / $3 per ride). If she expects to give 200 rides, she would earn $600 in revenue ($3 per ride x 200 rides) and have a profit of $360 ($600 revenue - $240 rental fee).
Therefore, if Yasmina wants to make the same amount of profit regardless of which company she uses, she would need children to take a total of 125 rides ((($240 rental fee for Sally's Saddles - $100 rental fee for Polly's Ponies) / ($3 per ride - $2 per ride)). If she expects to give 200 rides, she should use Sally's Saddles since she will make a higher profit of $360 compared to $300 with Polly's Ponies.
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a ferris wheel has a diameter of 54 ft. the point o is the center of the wheel. after the wheel has turned a 9 ft distance d, the point p moves to a new point marked q below. what is the measure of the angle 0 in radians
The angle measure is given as follows:
θ = 1/3 radians.
What is the measure of the circumference of a circle?The circumference of a circle of radius r is given by the equation presented as follows:
C = 2πr.
The radius is half the diameter, hence it is given as follows:
r = 27 ft. (half the diameter).
Hence the circumference is given as follows:
C = 54π cm.
The fraction represented by a distance of 9 ft is given as follows:
9/54π = 1/6π
The entire circumference is of 2π units, hence the angle is given as follows:
1/(6π) x 2π = 1/3 radians.
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Find the inverse of y=(2/3)x^5-10
The inverse of the function y= (2/3)x^5-10 is y = [3/2(x + 10)]^1/5
Finding the inverse of the functionFrom the question, we have the following parameters that can be used in our computation:
y= (2/3)x^5-10
Swap the ocurrence of x and y
so, we have the following representation
x = (2/3)y^5-10
Next, we have
(2/3)y^5 = x + 10
This gives
y^5 = 3/2(x + 10)
Take the fifth root of both sides
y = [3/2(x + 10)]^1/5
Hence, the inverse function is y = [3/2(x + 10)]^1/5
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Find the area of the surface. The part of the plane 4x + 3y + z = 12 that lies inside the cylinder x2 + y2 = 9
The area of the surface is [tex]\sqrt{\frac{15}{4}}\times \pi[/tex] unit square.
To find the area of the surface, we need to first find the intersection curve between the plane and the cylinder.
From the equation of the cylinder, we know that [tex]x^2 + y^2[/tex] = 9200.
We can substitute [tex]x^2 + y^2[/tex] for [tex]r^2[/tex] and rewrite the equation as [tex]r^2[/tex] = 9200.
Next, we can rewrite the equation of the plane as
z = 12 - 4x - 3y.
Now, we can substitute 12 - 4x - 3y for z in the equation [tex]r^2[/tex] = 9200, giving us:
[tex]x^2 + y^2[/tex] = 9200 - [tex](12 - 4x - 3y)^2[/tex]
Expanding and simplifying, we get:
[tex]x^2 + y^2[/tex] = [tex]16x^2 + 24xy + 9y^2 - 24x - 36y + 884[/tex]
Simplifying further, we get:
[tex]15x^2 + 24xy + 8y^2 - 24x - 36y + 884 = 0[/tex]
We can recognize this as the equation of an ellipse:
To find the area of the surface, we need to find the area of this ellipse that lies within the cylinder.
To do this, we can first find the major and minor axes of the ellipse.
We can rewrite the equation as:
[tex]15(x - \frac{4}{5})^2[/tex] + 8([tex]y[/tex] - [tex]\frac{9}{10}[/tex][tex])^{2}[/tex] = 1
So the major axis has length [tex]2/\sqrt{15}[/tex] unit and the minor axis has length [tex]\frac{2}{\sqrt{8} }[/tex] unit.
The area of the ellipse is then given by:
A = π x ([tex]\frac{1}{2}[/tex] x [tex]\frac{2}{\sqrt{15} }[/tex] x ([tex]\frac{1}{2}[/tex] x [tex]\frac{8}{\sqrt{8} }[/tex])
Simplifying we get:
A = π x ([tex]\sqrt{\frac{2}{15} }[/tex]) x ([tex]\sqrt{\frac{2}{8} }[/tex])
A = π x ([tex]\sqrt{\frac{1}{60} }[/tex])
A = [tex]\sqrt{\frac{15}{4}} \times \pi[/tex] unit square
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Find the probability of at least one failure in five trials of a binomial experiment in which the probability of success is %30
The probability of having at least one failure in five trials is approximately 0.83193 or 83.193%.
To calculate the probability of at least one failure, we first need to find the probability of having zero failures in five trials, which is equal to (0.3)^5 or 0.00243. Then, we subtract this value from 1 to obtain the probability of having at least one failure. This is because the sum of the probabilities of all possible outcomes should be equal to 1.
In this case, we can see that the probability of having at least one failure in five trials is quite high, at approximately 83%. This means that it is more likely than not that there will be at least one failure in a series of five trials with a success rate of 30%.
The probability of having at least one failure in five trials of a binomial experiment with a success rate of 30% can be calculated as follows:
1 - (probability of having zero failures in five trials)
= 1 - (0.7)^5
= 1 - 0.16807
= 0.83193
Therefore, the probability of having at least one failure in five trials is approximately 0.83193 or 83.193%.
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Line segments ab and bc intersect at point e.
part a
type and solve an equation to determine the value of the variable x.
part b
find the measure of ∠ cea.
part c
find the measure of ∠ aed.
For the line segment, the measure of angle BOD is 90°.
We will draw a circle passing through points A, B, C, and D. Since AC is parallel to BD, this circle will be the circumscribed circle of quadrilateral ABCD.
Now, let's consider the angles formed by the intersection of the circle and the lines AB and CD. We know that angle CAB is equal to half the arc AC of the circle, and angle CDB is equal to half the arc BD.
Since AC is parallel to BD, arc AC is congruent to arc BD. Therefore, angle CAB is equal to angle CDB.
Using this information, we can find the measure of angle AOB, which is equal to angle CAB + angle CDB. Substituting the given values, we get angle AOB = 35° + 55° = 90°.
Finally, we can use the fact that angle AOB and angle COD are supplementary angles (they add up to 180°) to find the measure of angle BOD.
Angle BOD = 180° - angle AOB
Substituting the value of angle AOB, we get
Angle BOD = 180° - 90° = 90°
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Complete Question:
Line segments AB and CD intersect at O such that AC∣∣DB. If ∠CAB=35° and ∠CDB=55°, find ∠BOD.
For a triangle ABC , the length of AC and BC are given and is acute. Justify if it is possible to have BC<ACsin angle A
PLEASE EXPLAIN USING WORKING AND CALCULATIONS AND NOT AN EXAMPLE. Thank you in advance!
The required answer is a possible scenario where BC (c) is less than AC * sin(angle A)
To justify if it is possible to have BC < AC sin(angle A) for an acute triangle ABC, let's consider the sine formula for a triangle.
The sine formula for a triangle states that:
a/sin(A) = b/sin(B) = c/sin(C)
where a, b, and c are the lengths of the sides of the triangle, and A, B, and C are the angles opposite to those sides, respectively.
Now let's isolate side BC (b) in the equation:
b = c * sin(B) / sin(C)
Since triangle ABC is acute, all angles A, B, and C are less than 90°. Therefore, sin(B) and sin(C) will be positive values between 0 and 1.
Let's now compare BC (b) to ACsin(angle A):
b < AC * sin(A)
c * sin(B) / sin(C) < AC * sin(A)
We can rewrite the inequality in terms of angle C:
sin(B) / sin(C) < (AC * sin(A)) / c
Now let's recall that angle C is the angle opposite to side AC (c), and angle B is the angle opposite to side BC (b). Since sine is a positive increasing function for acute angles (0° to 90°), it follows that the sine of a larger angle will result in a larger value.
As angle C is opposite to the longer side (AC), angle C > angle B. Therefore, sin(C) > sin(B), and their reciprocals will have the opposite relationship:
1 / sin(C) < 1 / sin(B)
Now, let's multiply both sides of the inequality by c * sin(B):
c < AC * sin(A)
This inequality represents a possible scenario where BC (c) is less than AC * sin(angle A), justifying the initial claim. So, yes, it is possible to have BC < AC sin(angle A) for an acute triangle ABC.
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if there are 40% math's books in school library containing 1800 books in total find the number of the math's books
Answer: 720
Step-by-step explanation: 1800 x 40%
Answer:
720 math books
Step-by-step explanation:
1800×40%= 720
there are 720 math books
PLEASE HELP WITH THIS
Answer:
The total area of the "i" figure is 5.33 square units.
The figure is made up of a square with side length 4 units, a triangle with base 4 units and height 3 units, and a semi-circle with radius 2 units.
The area of the square is 4^2 = 16 square units.
The area of the triangle is (1/2)(4)(3) = 6 square units.
The area of the semi-circle is (1/2)(pi)(2^2) = 2pi square units.
The total area of the figure is 16 + 6 + 2pi = 5.33 square units (to the nearest hundredth of a unit).
Here is a diagram of the figure with the areas of each shape labeled:
[Image of the "i" figure with the areas of each shape labeled]
1. Given XY and ZW intersect at point A Which conjecture is always true about he giver statement? A. XA = AY B. XAZ is acute C. XY is perpendicular to XY D. X, Y, Z and W are noncolinear.
The conjecture "X, Y, Z and W are noncolinear" is always true when given that line segments XY and ZW intersect at point A. So option D is the correct answer.
When line segments XY and ZW intersect at point A, it means that X, Y, Z, and W do not all lie on the same line. Since they do not all lie on the same line, they are considered non-collinear.
The conjecture "XA = AY" is not always true. It is only true if the lines XY and ZW are perpendicular bisectors of each other. The conjecture "XAZ is acute" is not always true. It is only true if angle ZAY is obtuse, in which case angle XAZ would be acute. The conjecture "XY is perpendicular to XY" is not a valid conjecture because it is a statement that XY is perpendicular to itself, which is always true but not informative.So the correct answer is option D. X, Y, Z and W are noncolinear.
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Determine the minimum and maximum value of the following trigonometric function.
f(x)=10sin(2/5x)+5
The minimum value of the function is -5 and the maximum value of the function is 15.
The minimum and maximum value of the given trigonometric function f(x)=10sin(2/5x)+5 can be determined by analyzing the amplitude and period of the sine function. The amplitude of the sine function is 10, which means that the maximum value of the function is 10+5=15 and the minimum value is -10+5=-5.
The period of the sine function is given by 2π/2/5=5π. This means that the function completes one full cycle every 5π units. To find the minimum and maximum values of the function, we need to evaluate it at the critical points of the function, which occur at intervals of 5π.
At x=0, the function has a value of 5+10sin(0)=15, which is the maximum value of the function. At x=5π/2, the function has a value of 5+10sin(2π/5)=5, which is the minimum value of the function.
At x=[tex]5π[/tex], the function has a value of 5+10sin(4π/5)=-5, which is the maximum value of the function. At x=15π/2, the function has a value of 5+10sin(6π/5) =5, which is the minimum value of the function.
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Qn in attachment. ..
Answer:
pls mrk me brainliest (´(ェ)`)
A statistics class weighed 20 bags of grapes purchased from the store. The bags are advertised to contain 16 ounces, on average. The class calculated the 90% confidence interval for the true mean weight of bags of grapes from this store to be (15. 875, 16. 595) ounces. What is the sample mean weight of grapes, and what is the margin of error?
The sample mean weight is 15. 875 ounces, and the margin of error is 16. 595 ounces.
The sample mean weight is 16. 235 ounces, and the margin of error is 0. 360 ounces.
The sample mean weight is 16. 235 ounces, and the margin of error is 0. 720 ounces.
The sample mean weight is 16 ounces, and the margin of error is 0. 720 ounces
The sample mean weight is 16.235 ounces, and the margin of error is 0.360 ounces.
How to find the sample mean?The sample mean weight of grapes is the midpoint of the confidence interval, which is given by:
sample mean = (lower bound + upper bound) / 2
sample mean = (15.875 + 16.595) / 2
sample mean = 16.235
Therefore, the sample mean weight of grapes is 16.235 ounces.
How ro find the margin of error?The margin of error is half the width of the confidence interval, which is given by:
margin of error = (upper bound - lower bound) / 2
margin of error = (16.595 - 15.875) / 2
margin of error = 0.360
Therefore, the margin of error is 0.360 ounces.
The correct answer is: The sample mean weight is 16.235 ounces, and the margin of error is 0.360 ounces.
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Convert Sin7A * Cos3A into sum or difference of sine or cosine
Using the identity: sin(A + B) = sin A cos B + cos A sin B, we can rewrite the expression as follows:
Sin 7A * Cos 3A = (sin 4A + sin 10A)/2 * (cos 2A + cos A)/2
Expanding this expression using the same identity, we get:
= (sin 4A * cos 2A + sin 4A * cos A + sin 10A * cos 2A + sin 10A * cos A)/4
Now, using the identity sin 2A = 2 sin A cos A, we can simplify further:
= (1/2) sin 2A * cos 2A + (1/2) sin 2A * cos 8A + (1/2) sin 6A * cos 2A + (1/2) sin 6A * cos 8A
Therefore, Sin 7A * Cos 3A can be written as:
(1/2) sin 2A * cos 2A + (1/2) sin 2A * cos 8A + (1/2) sin 6A * cos 2A + (1/2) sin 6A * cos 8A
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suppose 44% of the doctors in a hospital are surgeons. if a sample of 738 doctors is selected, what is the probability that the sample proportion of surgeons will differ from the population proportion by more than 4% ? round your answer to four decimal places.
The probability of the the sample proportion of surgeons will be given as 1.
The z-score is a dimensionless variable that is used to express the signed, fractional number of standard deviations by which an event is above the mean value being measured. It is also known as the standard score, z-value, and normal score, among other terms. Z-scores are positive for values above the mean and negative for those below the mean.
For this case we can define the population proportion p as "true proportion of surgeons" and we can check if we can use the normal approximation for the distribution of p,
1) np = 738 x 0.44 = 324.72 > 10
2) n(1 - p) = 738 x (1 - 0.44) = 413.28 > 10
3) Random sample: We assume that the data comes from a random sample Since we can use the normal approximation the distribution for P is given by:
psimN(p,[tex]\sqrt{\frac{p(1-p)}{n} }[/tex])
With the following parameters:
Hp = 0.44
[tex]\sigma_p=\sqrt{\frac{0.44(1-0.44)}{738} }[/tex]
= 0.01827
And we want to find this probability:
P(p > 0.04)
And we can use the z score formula given by:
[tex]z=\frac{p-\mu}{\sigma}[/tex]
And if we calculate the z score for p = 0.39 we got:
[tex]z=\frac{0.04-0.44}{0.01827}[/tex] = -21.893
And we can find this probability using the complement rule and the normal standard table or excel and we got:
P(p > 0.04) = P(Z > -21.893) = 1 − P(Z < −21.893) = 1 - 0 = 1.
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6. Katy and Colleen, simultaneously and independently, each write
down one of the numbers 3, 6, or 8. If the sum of the numbers is
even, Katy pays Colleen that number of dimes. If the sum of the
numbers is odd, Colleen pays Katy that number of dimes.
I need 3, 4, 5, 6 please hurry
Katy and Colleen each choose a number from 3, 6, or 8. If the sum is even, Katy pays Colleen the sum in dimes, and if odd, Colleen pays Katy the sum in dimes. There are 9 possible outcomes with payments ranging from 3 to 16 dimes.
If Katy writes down 3, then Colleen has two choices, either write down 3 to make the sum even or 6 to make it odd. If Colleen writes down 3, the sum is even, and Katy pays Colleen 6 dimes. If Colleen writes down 6, the sum is odd, and Colleen pays Katy 3 dimes.
If Katy writes down 6, then Colleen has two choices, either write down 3 to make the sum odd or 8 to make it even. If Colleen writes down 3, the sum is odd, and Colleen pays Katy 6 dimes. If Colleen writes down 8, the sum is even, and Katy pays Colleen 14 dimes.
If Katy writes down 8, then Colleen has two choices, either write down 3 to make the sum odd or 6 to make it even. If Colleen writes down 3, the sum is odd, and Colleen pays Katy 8 dimes. If Colleen writes down 6, the sum is even, and Katy pays Colleen 14 dimes.
Therefore, the possible outcomes and their corresponding payments are
3 + 3: odd, Colleen pays Katy 3 dimes
3 + 6: even, Katy pays Colleen 6 dimes
3 + 8: odd, Colleen pays Katy 8 dimes
6 + 3: odd, Colleen pays Katy 6 dimes
6 + 6: even, Katy pays Colleen 14 dimes
6 + 8: even, Katy pays Colleen 14 dimes
8 + 3: odd, Colleen pays Katy 8 dimes
8 + 6: even, Katy pays Colleen 14 dimes
8 + 8: even, Katy pays Colleen 16 dimes.
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