The correct statement regarding the solution to the system of equations is given as follows:
There is one unique solution (−5, 9).
How to define a linear function?The slope-intercept representation of a linear function is given by the equation shown as follows:
y = mx + b
The coefficients m and b have the meaning presented as follows:
m is the slope of the function, representing the increase/decrease in the output variable y when the input variable x is increased by one.b is the y-intercept of the function, representing the numeric value of the function when the input variable x has a value of 0. On a graph, it is the value of y when the graph of the function crosses or touches the y-axis.For the first line, the points are given as follows:
(-10, 10) and (0,8).
Hence the equation is:
y = -0.2x + 8.
For the second line, the points are given as follows:
(-8, 12) and (0,4).
Hence the equation is:
y = -x + 4.
Then the x-coordinate of the solution is obtained as follows:
-0.2x + 8 = -x + 4
0.8x = -4
x = -5.
The y-coordinate is given as follows:
y = -(-5) + 4 = 9.
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I Need help with this (if you can’t see zoom in)
Answer: 45 (depends on what the rightmost angle is)
Step-by-step explanation:
All angles of a triangle add up to 180 degrees.
Two angle measures are provided, 100 and 35 (?)
Add up the two to get 135, and subtract from 180
180 - 135 = 45 degrees.
I might be seeing the rightmost angle measure wrong but I think it's 35, if it's not you can still apply the same strategy, just add the two given angles and subtract that from 180 to find x.
A baseball pitcher records 153 strikeouts in
his first year pitching. Since then, the
number of strikeouts for this pitcher has
decreased by 31% per year. If this trend
continues, what is an upper limit on the total
of strikeouts over the pitcher's lifetime?
If a baseball pitcher records 153 strikeouts in his first year pitching with the number of strikeouts decreasing by 31% yearly, and if the trend continues, the upper limit on the total of strikeouts over the pitcher's lifetime is 153.
What is the upper limit?The upper limit refers to the maximum value possible.
The initial number of recorded strikeouts = 153
The annual decay rate = 31%
Decay factor = 0.69 (1 - 0.31)
Let the number of strikeouts in the year = y
Let the number of years of pitching = x
Equation:y = 153(0.69)^x
For instance, if x = 3, y = 153(0.69)^3
y = 50
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What's the solution?
The solution of the graphs of the equations is; )(6, 3 2/3)
What is a system of equation?A system of equation consists of two or more equations that share the same variables.
The solution of a system of equations obtained graphically can be obtained from the point of intersection of the lines of the graph of the equations
Taking the axis as the lowermost and leftmost white lines, we get;
The points on the function f are (0, 1), and (9, 5)
The slope is; (5 - 1)/(9 - 0) = 4/9
The y-intercept is; (0, 1)
The equation is; y = (4/9)·x + 1
The equation of the line g is; x = 6
Therefore, the point of intersection is; y = (4/9)×6 + 1 = 8/3 + 1 = 11/3 = 3 2/3
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Find the exact length of the curve. 36y² = (x² – 4)³, 5 ≤ x ≤ 9, y ≥ 0 = 96.666
The exact length of the curve is 112/3(√3 + 1), or approximately 96.666.
To find the exact length of the curve, we can use the formula for arc length:
L = ∫a^b √(1 + [f'(x)]²) dx
where f(x) = (x² - 4)^(3/2)/6, 5 ≤ x ≤ 9.
First, we find f'(x):
f'(x) = 3x(x² - 4)^(1/2)/12 = x(x² - 4)^(1/2)/4
Then we substitute f'(x) into the formula for arc length:
L = ∫5^9 √(1 + [x(x² - 4)^(1/2)/4]²) dx
L = ∫5^9 √(1 + x²(x² - 4)/16) dx
L = ∫5^9 √(16 + 16x²(x² - 4)/16) dx
L = ∫5^9 √(16x² + x^4 - 4x²) dx
L = ∫5^9 √(x^4 + 12x²) dx
L = ∫5^9 x²√(x^2 + 12) dx
We can use the substitution u = x^2 + 12, which gives du/dx = 2x and dx = du/2x, to simplify the integral:
L = (1/2)∫37^93 √u du
L = (1/2) [(2/3)u^(3/2)]_37^93
L = (1/3)[(125 + 108√3) - (13 + 36√3)]
L = (1/3)(112√3 + 112)
L = 112/3(√3 + 1)
Therefore, the exact length of the curve is 112/3(√3 + 1), or approximately 96.666.
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Write a function to describe the following scenario.
Jonathan is selling his old trading cards.
Each customer that buys gets the first
box they purchase for $10, and each
additional box for only $5.
y = [?]x + [?]
Answer:
y = 5x + 5
Step-by-step explanation:
If x is the number of boxes sold and y is the cost
The first box costs $10
Each additional box costs $5.
If the total number of boxes sold is x, then after selling the first box for $10, there will be x - 1 boxes left to be sold
The cost of x -1 boxes at $5 per box = 5(x - 1) = 5x - 5
Therefore for a total of x boxes sold the total cost, y in dollars is
y = 10 (for the first box) + 5x - 5 (for the remaining x - 1 boxes)
= 10 + 5x - 5
= 5 + 5x
which in standard form is written as
y = 5x + 5
We can verify our equation using specific numbers for x
For x = 1
y = 5 + 5(1) = 10 ; since only one box has been sold, the cost is fixed at $10
For x = 2 y = 5 + 5(2) = 5 + 10 = $15
This works out to since first box is sold at $10 and the second box at $5
Leave it to you to work out for other numbers
Cory and Dalia like to buy fruit at the farmers’ market on Sundays. One Sunday, Cory bought 4 apples and 6 oranges and paid $5.10. Dalia bought 2 apples and 5 oranges and paid $3.65.
What is the cost of 2 oranges?
Write the answer as a decimal to 2 places
The cost of two oranges is 1.1 dollars.
How to find the cost of two oranges?One Sunday, Cory bought 4 apples and 6 oranges and paid $5.10. Dalia bought 2 apples and 5 oranges and paid $3.65.
Therefore, using equation,
let
x = cost of each apples
y = cost of each oranges
Hence,
4x + 6y = 5.10
2x + 5y = 3.65
Multiply equation(ii) by 2
4x + 6y = 5.10
4x + 10y = 7.3
4y = 2.2
y = 2.2 / 4
y = 0.55 dollars
Therefore,
cost of 2 oranges = 0.55(2) = 1.1 dollars
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Mirrors kitchen sink holds up to 108.460 L of water runs amount to the nearest liter
The statement mentions that the kitchen sink has a capacity of 108.460 L of water and it is important to round up the amount to the nearest liter. When we round up the capacity of the sink, it comes out to be 108 liters. This means that the sink can hold up to 108 liters of water at maximum capacity.
It is important to have an idea of the sink’s capacity in terms of liters because it helps in managing the amount of water used while washing dishes or other household items. It is also beneficial to know the capacity of the sink while filling it with water for cleaning purposes, as it prevents the sink from overflowing.
Overall, the capacity of a sink is an important factor to consider while designing a kitchen or bathroom as it ensures proper functionality and prevents any damage to the surrounding areas due to overflowing water. So, it is always advisable to check the capacity of a sink before installing it in a household.
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Complete Question : Mirrors kitchen sink holds up to 108.460 L of water. Round this amount to the nearest liter.
Ortion of
a student is randomly chosen from the group.
what is the probability that the student likes cola b and does not like cola a?
o 0.1
0.2
0.3
o 0.4
Out of the 100 students, 20 like only cola b. Therefore, the probability that a randomly chosen student likes only cola b and does not like cola a is 0.2 or 20%, which is the answer. The answer is option B.
The probability that the student likes cola b and does not like cola a can be calculated as follows
Let's start by finding the number of students who like only cola b. We know that 50 students like cola b in total, but 30 of those students also like cola a. Therefore, the number of students who like only cola b is
50 - 30 = 20
So, out of 100 students, 20 like only cola b. Therefore, the probability that a randomly chosen student likes only cola b is
P(likes only cola b) = 20/100 = 0.2
Therefore, the probability that the student likes cola b and does not like cola a is 0.2.
The answer is option B: 0.2.
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--The given question is incomplete, the complete question is given
" In a class of 100 students, 60 students likes cola a, 50 students likes cola b and 30 students likes both.
From class a student is randomly chosen from the group.
what is the probability that the student likes cola b and does not like cola a?
0.1
0.2
0.3
0.4 "--
Which expression is equivalent to 1/4 (6x + 10 - 3x)?
Answer:
B
Step-by-step explanation:
3x 5
_ + _
4 2
8. If AB and BC are tangent to circle D,
AB = 15 inches, and DB = 17 inches, find
the perimeter of ABCD.
Answer:
46 inches
Step-by-step explanation:
You want the perimeter of ABCD, where AB and BC are tangent to circle D, and AB = 15 inches, BD = 17 inches.
FigureThe attachment shows the figure. Radii DA and DC are perpendicular to the tangens, so each triangle is a right triangle. The hypotenuse BD is given as 17 inches, and the leg AB is given as 15 inches. The other leg is found from the Pythagorean theorem (or from your knowledge of Pythagorean triples). It is ...
AD = √(DB² -AB²)
AD = √(17² -15²) = √(289 -225) = √64
AD = 8
PerimeterThe perimeter is the sum of side lengths. The kite shape is symmetrical, so the perimeter is ...
P = 2(AD +AB) = 2(8 +15) = 46 . . . . inches
The perimeter of ABCD is 46 inches.
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The points $(1, 7), (13, 16)$ and $(5, k)$, where $k$ is an integer, are vertices of a non-degenerate triangle. what is the sum of the values of $k$ for which the area of the triangle is a minimum
The minimum value of k that satisfies this inequality is k = 9.
To find the value of k for which the area of the triangle is a minimum, we'll use the following terms: vertices, non-degenerate triangle, and area of a triangle. Here's the step-by-step explanation:
1. The vertices of the triangle are $(1, 7), (13, 16),$ and $(5, k)$.
2. A non-degenerate triangle means it has a positive area.
3. The area of a triangle can be calculated using the formula: Area = (1/2) * |x1(y2 - y3) + x2(y3 - y1) + x3(y1 - y2)|
Now, let's find the area of the triangle with the given vertices:
Area = (1/2) * |1(16 - k) + 13(k - 7) + 5(7 - 16)|
We want to minimize the area, so let's simplify the expression:
Area = (1/2) * |-9 + 13k - 104|
Since we want a non-degenerate triangle, the area must be greater than 0. Therefore, the expression inside the absolute value must be positive:
-9 + 13k - 104 > 0
13k > 113
k > 113/13
k > 8.69
Since k is an integer, the minimum value of k that satisfies this inequality is k = 9.
The sum of the values of k for which the area of the triangle is a minimum is just the single value we found, which is 9.
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Krissa exercises daily by walking. she aims to walk at a steady rate of 3.4 miles per hour.
a. if t represents time in hours and d represents distance in miles, write an equation that models the relationship between these variables.
b. use your equation to calculate the distance krissa will jog in 5/8 of an hour (round to the hundredths).
c. use your equation to calculate how long it will take for krissa to walk 5.44 miles.
When Krissa exercises daily by walking and she aims to walk at a steady rate of 3.4 miles per hour:
a) The equation is d = 3.4t;
b) Krissa will walk 2.13 miles;
c) It will take Krissa 1.6 hours to walk 5.44 miles.
What is a) the equation for Krissa's walking speed (d = 3.4t), and b) how far will she walk in 5/8 of an hour (2.13 mi), and c) how long to walk 5.44 miles (1.6 hours)?When Krissa exercises daily by walking and she aims to walk at a steady rate of 3.4 miles per hour:
a. The equation that models the relationship between time and distance is:
d = 3.4t
where d is the distance Krissa walks in miles and t is the time she spends walking in hours.
b. To calculate the distance Krissa will walk in 5/8 of an hour, we can substitute t = 5/8 into the equation from part a:
d = 3.4(5/8) = 2.125 miles
Therefore, Krissa will walk 2.125 miles in 5/8 of an hour, rounded to the hundredths.
c. To calculate how long it will take Krissa to walk 5.44 miles, we can rearrange the equation from part a to solve for t:
t = d/3.4
Substituting d = 5.44 into this equation, we get:
t = 5.44/3.4 = 1.6 hours
Therefore, it will take Krissa 1.6 hours to walk 5.44 miles.
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Find the perimeter of a rectangle whose vertices are (3,2), (13,2), (13,9), and (3,9).
The perimeter of a rectangle is 34 units.
To find the perimeter of the rectangle with vertices (3,2), (13,2), (13,9), and (3,9), you need to determine the lengths of its sides.
The distance between (3,2) and (13,2) is the length of the base: 13 - 3 = 10 units.
The distance between (3,2) and (3,9) is the height: 9 - 2 = 7 units.
The perimeter of a rectangle is given by the formula P = 2*(length + width). In this case, P = 2*(10 + 7) = 2*17 = 34 units.
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question subtract. write your answer as a fraction in simplest form. 19−(−29)=
The result of 19 minus a negative 29 is 48. Expressed as a fraction in simplest form, this would be 48/1.
To find the difference between 19 and negative 29, we can use the rule that subtracting a negative number is the same as adding its absolute value. So, 19 - (-29) is the same as 19 + 29, which equals 48.
To write this as a fraction in simplest form, we simply put 48 over 1, since any integer can be expressed as a fraction with a denominator of 1. We don't need to simplify any further, so our final answer is 48/1.
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A game has a spinner with 15 equal sectors labeled 1 through 15. what is p(multiple of 3 or multiple of 7)? 215 13 25 715
Answer: D. 7/15 or
Step-by-step explanation:
You have 15 possible outcomes
Probability= possibilities/outcomes
Possible numbers that are multiples of 3 are: 3, 6, 9, 12, 15. There are 5 possibilities.
P(multiple of 3) = 5/15
Possible numbers that are multiples of 7 are: 7, 14, . There are 2 possibilities.
P(7) = 2/15
Because of the or you add th e probabilities
P(multiple of 3 or multiple of 7) = 5/15 +2/15 =7/15
D
Anna ate 58of an orange and gave the other 38 to her brother. which equation can be used to find the difference between the amount anna ate and the amount she gave her brother?
The result of this equation will give us the numerical value representing the difference between the amounts Anna ate and the amount she gave to her brother. In this case, the difference would be 20.
To find the difference between the amount of orange Anna ate and the amount she gave to her brother, we can use the equation: 58 - 38 = x
Here, x represents the difference between the two amounts. We can solve for x by subtracting 38 from 58.
58 - 38 = 20
Therefore, the difference between the amount of orange Anna ate and the amount she gave her brother is 20. Anna ate 58 of an orange and gave 38 to her brother, so the remaining 20 must be the difference between the two amounts.
In summary, the equation that can be used to find the difference between the amount Anna ate and the amount she gave her brother is 58 - 38 = x, where x represents the difference. The answer is 20.
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To assess the effect of piston ring type and oil type on piston ring wear, three types of piston ring and four types of oil were studied. Three replications of an experiment, in which the number of milligrams of material lost from the ring in four hours of running was measured, were carried out for each of the 12 combinations of oil type and piston ring type.
With oil type as the row effect and piston ring type as the column effect, the following sums of squares were observed: SSA = 1. 0926, SSB = 0. 9340, SSAB = 0. 2485, SSE = 1. 7034.
a) How many degrees of freedom are there for the effect of oil type?
b) How many degrees of freedom are there for the effect of piston ring type?
c) How many degrees of freedom are there for interactions?
d) How many degrees of freedom are there for error?
e) Construct an ANOVA table. You may give ranges for the P-values.
f) Is the additive model plausible? Provide the value of the test statistic and the P-value.
g) Is it plausible that the main effects of oil type are all equal to 0? Provide the value of the test statistic and the P-value.
h) Is it plausible that the main effects of piston ring type are all equal to 0? Provide the value of the test statistic and the P-value
The test statistic is large and the corresponding P-value is small, we reject the null hypothesis that the main effects of piston ring type are all equal to 0.
What is the degree of freedom for the effect?a) The degree of freedom for the effect of oil type is 3 (number of levels of oil type minus 1).
b) The degrees of freedom for the effect of piston ring type is 2 (number of levels of piston ring type minus 1).
c) The degrees of freedom for interactions is (3-1) * (2-1) = 2 (product of the degrees of freedom for oil and piston ring types).
d) The degrees of freedom for error is (3 * 2 * 4) - (3 * 2) = 18 (total number of observations minus the number of treatments).
e) The ANOVA table is as follows:
Source Sum of Squares Degrees of Freedom Mean Square F-Statistic P-value
Oil 1.0926 3 0.3642 F1 P1
Piston Ring 0.9340 2 0.4670 F2 P2
Interaction 0.2485 2 0.1243 F3 P3
Error 1.7034 18 0.0946
Total 3.9785 25
Note: The F-statistics and P-values will need to be calculated using the appropriate formulas.
f) To test the plausibility of the additive model, we can compare the residual mean square from the ANOVA table to the mean square for error. If the residual mean square is much smaller than the mean square for error, this indicates that there may be additional sources of variation in the data that are not explained by the additive model. The test statistic for this is:
F = (mean square for error) / (residual mean square)
If the test statistic is large and the corresponding P-value is small, we reject the additive model.
g) To test the plausibility that the main effects of oil type are all equal to 0, we can use the F-test:
F1 = (mean square for oil type) / (mean square for error)
If the test statistic is large and the corresponding P-value is small, we reject the null hypothesis that the main effects of oil type are all equal to 0.
h) To test the plausibility that the main effects of piston ring type are all equal to 0, we can use the F-test:
F2 = (mean square for piston ring type) / (mean square for error)
If the test statistic is large and the corresponding P-value is small, we reject the null hypothesis that the main effects of piston ring type are all equal to 0.
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In circle O, mAD = 120 and mBC= 80. What is mBEC? :0 ;(
The measure of angle m<BEC is 80 degrees
How to determine the valueFrom the information shown, we have that;
m< AD = 120 degrees
m< BC = 80 degrees
To determine the value of m<BEC, we need to know that it is a minor arc in the circle.
Also, a minor arc is described as the shorter arc that connects two endpoints on a circle.
The measure of a minor arc is less than 180° , and is equal to the measure of the arc's central angle.
We can see than the angle measure of m<BC = m<BEC
Then,
m<BEC = 80 degrees
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What is the missing step in solving the inequality 4(x – 3) 4 < 10 6x? 1. the distributive property: 4x – 12 4 < 10 6x 2. combine like terms: 4x – 8 < 10 6x 3. the addition property of inequality: 4x < 18 6x 4. the subtraction property of inequality: –2x < 18 5. the division property of inequality: ________ x < –9 x > –9 x < x is less than or equal to negative startfraction 1 over 9 endfraction. x > –x is greater than or equal to negative startfraction 1 over 9 endfraction.
The missing step in solving the inequality 4(x – 3) /4 < 10/6x is to divide both sides by 2.
Apply the distributive property to get 4x - 12 /4 < 10/6x.
Combine like terms to obtain 4x - 3 < 5/3x.
Add 3/3x to both sides to get 4x < 8/3x + 3.
Subtract 8/3x from both sides to get 4/3x < 3.
Divide both sides by 4/3 to get x < -9/4.
Simplify the result by dividing both sides by 2 to get x < -9/2 or x > -4/3.
Therefore, the missing step is to divide both sides by 2, which gives x < -9/2 or x > -4/3.
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What is the explicit formula for this sequence?
-7, -3, 1, 5, ...
A. an = 9+ (n − 1)(-4)
B. an-4+ (n-1)(-7)
C. an-7+ (n − 1)4
D. an-7+ (n-1)(-4)
Answer:
It is C
Step-by-step explanation:
It cannot be d bc - 7-4=-11 so rejected
Not b bc the first number is - 7
The same w a
write an expression to represent; "The sum of a number b and 24"
Answer: ?
Answer:
b+24
Step-by-step explanation:
the sum of a number represented by variable b
-- b+
and 24
-- b+24
Answer: b + 24
Step-by-step explanation:
The sum of .. and ➜ addition between two values
a number b ➜ b (represented by a variable)
24 ➜ the number 24
The sum of a number b and 24 ➜ b + 24
A third candle, in the shape of a right circular cone, has a volume of 16 cubic inches and a radius of 1. 5 inches. What is the height, in inches, of the candle? Round your answer to the nearest tenth of an inch.
The height of the right circular cone ,candle is approximately 6.8 inches.
To find the height of the third candle, which is a right circular cone with a volume of 16 cubic inches and a radius of 1.5 inches, we will use the formula for the volume of a cone: V = (1/3)πr^2h, where V is the volume, r is the radius, and h is the height.
1. Substitute the given values into the formula: 16 = (1/3)π(1.5)^2h
2. Simplify the equation: 16 = (1.5^2 * π * h) / 3
3. Solve for h:
a. Multiply both sides by 3: 48 = 1.5^2 * π * h
b. Divide by π: 48/π = 1.5^2 * h
c. Divide by 1.5^2: (48/π) / 1.5^2 = h
4. Calculate the height, and round to the nearest tenth: h ≈ 6.8 inches
The height of the candle is approximately 6.8 inches.
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Susan’s weekly earnings were proportional to the number of hours she worked. this table shows
the number of hours susan worked and the amount she earned. how much money did susan
earn per hour?
hours earnings ($)
5 $47.50
7 $66.50
9 $85.50
11 $104.50
Susan earns $9.50 per hour. This is found by dividing her earnings by the number of hours worked for each corresponding row in the table.
To find how much money Susan earned per hour, we need to divide the total earnings by the total number of hours worked. For finding the Total earnings we need to add the money earned in every hour,
Total earnings = $47.50 + $66.50 + $85.50 + $104.50 = $304
Total hours worked = 5 + 7 + 9 + 11 = 32
Money earned per hour = Total earnings / Total hours worked
= $304 / 32
= $9.50
Therefore, Susan earned money of $9.50 per hour.
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the state of new jersey is divided into 21 counties. the counties population range from just over 60,000 people to almost 1,000,000 people. The median country population is 445,349 people, and the interquaritle range is 467,983 people. what is the typical population of a new jersey county?
The typical population of a New Jersey county can be described as being around 445,349 people which is also the median population of a New Jersey country.
Based on the given information, the median population of a New Jersey county is 445,349 people. This means that half of the counties in the state have a population above this number, while the other half have a population below it.
However, it is important to note that the range of county populations in New Jersey is quite large, with some counties having as little as 60,000 people and others having almost 1,000,000 people. This indicates that there is significant variability in the population size of counties across the state.
The interquartile range (IQR) of county populations is also provided, which tells us that the middle 50% of county populations fall within a range of 467,983 people. This suggests that while there is variability in county populations, there is also some level of consistency in the distribution of populations across the state.
Overall, the typical population of a New Jersey county can be described as being around 445,349 people, with some counties having significantly larger or smaller populations.
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see attachment below..
The equation that represents the asymptote of the function, y = tan x is: C. x = π/4.
How to Determine the Equation that Represents the Asymptote of a Graph?Option A, x = -π, and Option D, x = (3π)/2, do not represent asymptotes of the graph of the function y = tan x.
Option B, x = 0, represents a vertical asymptote of the graph of y = tan x because tan x is undefined at x = π/2 + kπ, where k is an integer. Therefore, tan x is undefined at x = π/2, 3π/2, 5π/2, etc. and there is a vertical asymptote at x = 0.
Option C, x = π/4, represents a linear asymptote of the graph of y = tan x. As x approaches π/4 from either side, the tangent function approaches a straight line with slope 1 and x-intercept 0. Therefore, the equation of the asymptote is y = x - π/4.
Thus, the answer is C. x = π/4.
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A bottle holds 24 ounces of water. It has x ounces of water in it.
What does 24 - x represent in this situation?
Write a question about this situation that has 24 − x for the answers.
Answer:
24 - x would mean the air, or empty space in the bottle not being used by the water in the bottle.
Question:
"Create an equation that shows how much space is not taken up by water in a 24 once water bottle if it currently has x ounces of water."
OR
"A standing garden bed has x cubic feet in the box. It can hold 24 cubic feet, counting from the bottom to very top. How much empty space is there from the top of the dirt in the box to the very top of the box?"
CAN SOMEONE PLEASE HELP ME ILL GIVE BRAINLIST
Mai and Elena are shopping
for back-to-school clothes. They found a skirt that originally cost $30
on a 15% off sale rack. Today, the store is offering an additional 15% off. To find the new price of
the skirt, in dollars, Mai says they need to calculate 30. 0. 85 0. 85. Elena says they can just
multiply 30. 0. 70.
1. How much will the skirt cost using Mai's method?
2. How much will the skirt cost using Elena's method?
3. Explain why the expressions used by Mai and Elena give different prices for the skirt. Which
method is correct?
1. The skirt cost using Mai's method is $21.68.
2. The skirt cost using Elena's method is $21.
3. Mai's method is correct because she correctly calculates the discounts sequentially while Elena combines the discount.
We'll examine the methods suggested by Mai and Elena for finding the new price of the skirt and determine which one is correct.
1. Using Mai's method (30 x 0.85 x 0.85):
1: Calculate the first 15% off discount: 30 x 0.85 = 25.50
2: Calculate the additional 15% off discount: 25.50 x 0.85 = 21.675
So, the skirt will cost $21.68 using Mai's method (rounded to the nearest cent).
2. Using Elena's method (30 x 0.70):
Elena suggests taking 30% off the original price. To do this, we multiply the original price by 0.70:
30 x 0.70 = 21
So, the skirt will cost $21 using Elena's method.
3. Explanation of the difference in expressions and the correct method:
Mai's method is correct because she correctly calculates the discounts sequentially. The first 15% off is applied to the original price, and then the additional 15% off is applied to the reduced price. This results in a final price of $21.68.
Elena's method is incorrect because she combines the two discounts into a single 30% off, which does not accurately reflect the sequential discounts. By doing this, she finds a final price of $21, which is not correct.
In conclusion, Mai's method (30 x 0.85 x 0.85) is the correct way to calculate the new price of the skirt, resulting in a final cost of $21.68.
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Joe and Mike ran the same race. Joe finished the race 4 minutes before Mike. If Mike finished the race at 4:02 p.m., what time did Joe finish the race?
Answer:3:58 p.m.
Step-by-step explanation:
A chef uses the expression 0. 3n to represent the pounds of beef to use in a soup recipe for n people. The soup also has
7 fewer pounds of carrots than beef,
twice as many pounds of potatoes as beef, and
half as many pounds of onions as carrots.
How many pounds of ingredients will the chef use to make soup for 40 people?
Enter your answer in the box
The chef will use 43.5 pounds of ingredients to make soup for 40 people. Your answer is 43.5..
Step 1: Calculate the pounds of beef for 40 people using the expression 0.3n.
0.3 * 40 = 12 pounds of beef
Step 2: Calculate the pounds of carrots, which is 7 fewer than the pounds of beef.
12 - 7 = 5 pounds of carrots
Step 3: Calculate the pounds of potatoes, which is twice the pounds of beef.
2 * 12 = 24 pounds of potatoes
Step 4: Calculate the pounds of onions, which is half the pounds of carrots.
0.5 * 5 = 2.5 pounds of onions
Step 5: Add up the pounds of all ingredients to find the total pounds for 40 people.
12 (beef) + 5 (carrots) + 24 (potatoes) + 2.5 (onions) = 43.5 pounds
The chef will use 43.5 pounds of ingredients to make soup for 40 people. Your answer is 43.5.
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slove log2(x-6)+log2(x+6)=6
Answer: x = 10
Step-by-step explanation: To solve this equation, you can use the logarithmic property that states loga(b) + loga(c) = loga(bc). So, you can rewrite the left side of the equation as log2((x-6)(x+6)). Then, you can use the property that states loga(b) = c is equivalent to a^c = b to solve for x.
So, you have log2((x-6)(x+6)) = 6, which is equivalent to 2^6 = (x-6)(x+6). Simplifying the left side gives you 64, and expanding the right side gives you x^2 - 36 = 64. Solving for x gives you x = ±√100, which is x = ±10. However, since the original equation includes logarithms.