Answer:
y= -2
X= 7
[tex]using \: elimination \: method \\ x + 3y = 1 \\ - 3x - 3y = - 15 \\ add \: the \: two \: equations \\ - 2x = - 14 \\ divide \: both \: sides \: by \: 2 \\ x = 7 \\ replace \: x \: with \: 7 \: to \: find \: value \: of \: y \\ (7) + 3y = 1 \\ y = - 2[/tex]
Review the graph of function f(x). On a coordinate plane, a graph approaches x = negative 3 in quadrant 2, has inflection point (negative 1, 0) and approaches x = 1 in quadrant 4. A graph approaches x = 1 in quadrant 1, and curves down and approaches the x-axis in quadrant 1. Which statement describes Limit of f (x) as x approaches 1?
The correct statement regarding the limit of f(x) as x -> 1 is given as follows:
lim x -> 1 f(x) = -∞.
How to calculate the lateral limits?To obtain lateral limits, we need to take the limit of a function as it approaches a point from the left-hand side and the right-hand side separately.
If the two limits are equal, then this is the limit of the function, while if the lateral limits are different, then the limit of the function does not exist for the value of x.
From quadrant 2, the function approaches x = 1 on quadrant 4, hence the limit to the left is given as follows:
lim x -> 1^- f(x) = -∞.
A graph approaches x = 1 in quadrant 1, and curves down and approaches the x-axis in quadrant 1, hence the limit to the right is given as follows:
lim x -> 1^+ f(x) = -∞.
As the lateral limits are equal, the limit of the function is given as follows:
lim x -> 1 f(x) = -∞.
Missing InformationThe problem describes the graph of the function.
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John has three more pet birds than he has cats. If he has 11 pets in all, how many cats does he have?
Answer:
4 cats
Step-by-step explanation:
Let b represent birds and c represent cats
b = c + 3
c + b = 11
c + (c + 3) = 11
2c + 3 = 11
2c = 8
c = 4.
John has 4 cats
b = (4) + 3
b = 7
John has 7 birds
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Write the equation of the conic section shown below.
The equation of the conic section shown below is x² + y² + 10x + 2y - 20 = 0
Describe Circle?A circle is a two-dimensional geometric shape that consists of a set of points in a plane that are equidistant from a fixed point called the center. The distance from the center to any point on the circle is called the radius.
A circle can be defined by its center point and radius or by its circumference, which is the distance around the perimeter of the circle. The circumference of a circle can be calculated using the formula:
C = 2πr
where C is the circumference, r is the radius, and π (pi) is a mathematical constant approximately equal to 3.14.
The center of the circle is (-5,-1) and its radius is the distance from the center to any point on the circle. Using the distance formula, we can find the radius:
r = √((0 - (-1))² + (-10 - (-5))²) = √(1 + 25) = √(26)
So, the equation of the circle in standard form is:
(x + 5)² + (y + 1)² = 26
Alternatively, in general form, it can be written as:
x² + y² + 10x + 2y - 20 = 0
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help pls with my homework
Answer:
300.20
Step-by-step explanation:
because it was a nice guesss
A team with 8 games out of 12 games played. What is the reduced ratio of the following:
__________ 1. Win to games played?
__________ 2. Win to losses?
__________ 3. Loss to games played?
Therefore , the solution of the given problem of ratio comes out to be 1:3 is the decreased loss-to-games-played ratio.
Explain ratio.A collection of integers "a" as well as "b" that seem to be equal can be defined using the straightforward fraction calculation "a / b," at which "b" may be larger than zero. A ratio is created by combining two ratios. The ration would be 1:1 if there were just one male and three women. There are 1/4 guys and 3/4 women in the group. Portions can be a divide between different things, a number, or a specific portion of the volume of a component.
Here,
In events played, win:
Out of the 12 games contested, 8 were victories. We can split the numerator and denominator by 4 to decrease the ratio:
=> 8/12 = 2/3
The decreased win-to-games-played ratio is 2:3.
win to loss ratio
If a squad has 8 victories, they have 4 defeats (since they have played 12 games in total). As a result, the winning/losing split is as follows:
8:4, which is further diminished by multiplying the number and denominator by 4:
=> 2:1
The decreased win-to-loss ratio is 2:1.
Played events lost:
If a squad has 4 losses and has played a total of 12 games, the ratio of losses to games played is as follows:
=> 4/12 = 1/3
=> 1:3 is the decreased loss-to-games-played ratio.
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Lori is 8 years old. In 5 years, her cousin Philip will be twice as old as Lori will be. Write the ratio of Philip's age now to Lori's age now.
Answer: 13:26
Step-by-step explanation:
8 + 5 = 13. Philip will be twice as old as Lori will be.
13 x 2 = 26
So, the ratio will be 13:26
Hope this helps!
Find the value of x.
Answer: x = 60 degrees
Step-by-step explanation:
As we see, there is a 90 degree angle formed the top left corner. You divided it by 2 and it is formed by both triangles and u get 45 degrees.
Now, according to angle sum property:
angle A + Angle B + Angle C = 180 degrees
therefore, 75 + 45 + angle c = 180
and by linear equation , angle c = 180 - [75 + 45]
= 180 -120
= 60
therefore, x = 60
Answer:
60 degrees
Step-by-step explanation:
A right triangle is 180 degrees. 60+75+a= 180degrees. It shows a right angle, with a line right at the middle. half of 90 is 45, so put that in the equation and you get 60+75+45=180 degrees. to solve for ? you want to take 45 + 75 + ? = 180 degrees 45 plus 74 is 135 so take 180-135 is 60. the ? will be 60 degrees.
I hope this helps : )
The list below shows the number of books returned to a library during each of 10 weeks
393, 393, 496, 400, 458, 482, 491, 511, 507, 509
Which two measures of these data best describe the typical number of books that were
returned to the library each week?
A Mean and median
B Mean and range
C Mode and median
D Mode and range
Answer: The answer is the letter B
Step-by-step explanation:
Mean is the overall average of numbers or books and range is the length from greatest to least
A dish contains 2 bacteria. The bacteria quadruple in number every 16 minutes. The number of bacteria in the dish over time can be represented by the expression 2×4t16.
Which equivalent expression could also be used to represent the number of bacteria in the dish for any time, t, in minutes?
Responses
4t8
8t16
2×2t8
4×2t16
If the bacteria in a dish that contains 2 bacteria quadruple every 16 minutes can be represented by the expression 2×4t/16, an equivalent expression for the number of bacteria in the dish for any time, t, in minutes is B. 8t/16.
What is an equivalent expression?An equivalent expression depicts two algebraic expressions that have the same value when the values for the variables are plugged in.
An algebraic expression is the combination of variables, values, constants, and numbers using mathematical operands without the equal symbol (=).
2×4t/16 = 8t/16
2×4t/16 ≠ 4t8
2×4t/16 ≠ 2×2t8
2×4t/16 ≠ 4×2t16
Thus, 2×4t/16 = 8t/16 as equivalent expressions.
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Guys i need help with these. THIS QUESTION IS EASY PLS HELP:)
(5[tex]\sqrt{3}[/tex])^2
= (25 x 3)
= 75
(2[tex]\sqrt{5}[/tex])^2
= (4 x 5)
= 20
At a restaurant any slice of pizza cost $250 the restaurant is serving pepperoni and sausage pizza which expression represents the cost of x number of pepperoni slices and wine number of sausage slices of pizza
Answer the following questions using the image below
a) If the slant range of the plane in the image is 14.5 km, and the ground range is 10.15 km, find the altitude of the plane to the nearest meter. Show your work and explain your thinking.
b) If this plane loses power and descends suddenly at a rate of 750 meters per minute, how much time will the pilot have before he has to land?
a) The altitude οf the plane is apprοximately 10,780 meters.
b) The pilοt will have apprοximately 14.4 minutes befοre he has tο land if the plane descends suddenly at a rate οf 750 meters per minute.
What are trigοnοmetric functiοns?Trigοnοmetric functiοns are mathematical fοrmulas that cοnnect a triangle's angles and side ratiοs. Sine, cοsine, and tangent are the three fundamental trigοnοmetric functiοns; they are alsο knοwn as sin, cοs, and tan, respectively. These functiοns are emplοyed in the study οf physics, engineering, and οther branches οf science as well as in the study οf geοmetry, trigοnοmetry, and οther branches οf mathematics. They can be used tο sοlve issues invοlving angles and distances, such as determining a building's height, the separatiοn between twο οbjects, οr the speed οf a mοving οbject.
a) The Pythagοrean theοrem, which relates the three sides οf a right triangle, can be used tο determine the plane's altitude. In this instance, the slant range serves as the hypοtenuse οf a right triangle, with the grοund range serving as οne οf the legs and the height serving as the οther leg. As a result, we have:
altitude² + grοund range² = slant range²
Substituting the given values, we get:
altitude² + (10.15 km)² = (14.5 km)²
Simplifying and sοlving fοr altitude, we get:
altitude² = (14.5 km)² - (10.15 km)²
altitude² = 116.205 km²
altitude = √116.205 km² ≈ 10.78 km ≈ 10,780 m
Therefοre, the altitude οf the plane is apprοximately 10,780 meters.
b) If the plane descends suddenly at a rate οf 750 meters per minute, its altitude will decrease by 750 meters every minute. Tο find hοw much time the pilοt has befοre he has tο land, we can divide the initial altitude by the rate οf descent. Therefοre, we have:
time = initial altitude/rate οf descent
Substituting the initial altitude and rate οf descent, we get:
time = 10,780 m / 750 m/min
Simplifying, we get:
time = 14.3733 min ≈ 14.4 min
Therefοre, the pilοt will have apprοximately 14.4 minutes befοre he has tο land if the plane descends suddenly at a rate οf 750 meters per minute.
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Simplify the radical: √32x
(I understand how to simplify radicals I just don’t know how to do it with an unknown variable in it)
The expression when evaluated is 4√2x
How to evaluate the expressionFrom the question, we have the following parameters that can be used in our computation:
√32x
Express 32 as the product of 16 and 2
So, we have
√32x = √(16 * 2x)
Take the LCM of 16
So, we have the following representation
√32x = 4√2x
Hence, the solution is 4√2x
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Triangle NMO is drawn with vertices N(−4, −2), M(−1, −1), O(−4 , −5). Determine the image coordinates of N′M′O′ if the preimage is translated 3 units to the left. N′(−7, −2), M′(−4, −1), O′(−7, −5) N′(−4, −5), M′(−1, −4), O′(−4, −8) N′(−4, 1), M′(−1, 2), O′(−4, −2) N′(−1, −2), M′(2, −1), O′ (−1, −5)
Answer: N′(−7, −2), M′(−4, −1), O′(−7, −5)
Step-by-step explanation:
im right and youre wromng
Please help I only have part A incorrect I can’t figure it out
By similarity ratio of triangles, we have;
ΔPQR ∼ ΔPSR ∼ ΔRSQ
PS/PR = PR/PQ
PQ/RQ = RQ/SQ
How to solve similar triangles?Similar triangles are defined as triangles that have the same shape, but their sizes may vary. In other words, if two triangles are similar, then their corresponding angles are congruent and corresponding sides are in equal proportion.
Thus, applying the concept of similar triangle ratio we can say that;
ΔPQR ∼ ΔPSR ∼ ΔRSQ
Similarly, by similarity ratio of triangles, we have;
PS/PR = PR/PQ
We also have;
PQ/RQ = RQ/SQ
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solve: 5−3|x+8|=20
(multiple choice)
x= -5
No solution
x= -13
x= 8
the solutions are x = -13 and x = -5. So, the correct answer is (A) x = -5, x = -13.
What is algebraic Expression?Any mathematical statement that includes numbers, variables, and an arithmetic operation between them is known as an expression or algebraic expression. In the phrase 4m + 5, for instance, the terms 4m and 5 are separated from the variable m by the arithmetic sign +.
Given an algebraic expression:
5 - 3|x + 8| = 20
First, we can begin by adding 3|x+8| to both sides of the equation, giving us:
5-20 = 3|x+8|
Simplifying the left-hand side, we get:
-15 = 3|x+8|
Next, we can divide both sides by 3, giving us:
-5 = |x+8|
Now we have an absolute value equation, which has two possible solutions depending on whether x+8 is positive or negative.
If x+8 is positive, then we have:
-5 = x+8
Solving for x, we get:
x = -13
If x+8 is negative, then we have:
-5 = -(x+8)
Solving for x, we get:
x = -5
Therefore, the solutions are x = -13 and x = -5. So, the correct answer is (A) x = -5, x = -13.
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A family is considering selling a four-wheeler they had purchased for $8,200. They discover that a used four-wheeler depreciates at 12% per year. Write an equivalent equation using the monthly decay factor. What is the monthly decay rate of the four-wheeler?
The monthly decay factor is 0.0733 of the four-wheeler, and the equation is x = P(D)ˣ.
What does it mean by depreciation?Depreciation is an important subject in finance and economics since it is used to determine an asset's worth over time. For accounting and financial reporting needs, it enables people and businesses to monitor the fall in the value of their assets. Depreciation may be utilised to lower taxable income, which in turn lowers tax liabilities, hence it also plays a part in tax legislation.
The yearly decay factor is given as:
yearly decay factor = 1 - depreciation rate
yearly decay factor = 1 - 0.12
yearly decay factor = 0.88
Divide the yearly decay factor by 12:
monthly decay factor = yearly decay factor / 12
monthly decay factor = 0.88 / 12
monthly decay factor = 0.0733
n equivalent equation using the monthly decay factor as follows:
value after x months = initial value x (monthly decay factor)ˣ
x = P(D)ˣ
Hence, the monthly decay factor is 0.0733 of the four-wheeler, and the equation is x = P(D)ˣ
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Two docks are located on an east-west line 2599 ft apart. From dock A, the bearing of a coral reef is 58°23′. From dock B, the bearing of the coral reef is 328°23′. Find the distance from dock A to the coral reef.
Therefore , the solution of the given problem of trigonometry comes out to be it is roughly 5193 feet from pier A to the coral reef.
What is a trigonometry?Relationships between mathematics but also cubic splines When the different fields were combined, astrophysics is thought to have been born in the third century BC. With the aid of exact angle mathematical techniques, many metric issues can be resolved or the outcomes of calculating them can be ascertained. The study of the six fundamental trigonometric formulas is known as trigonometry.
Here,
The north-south distance from pier A to the coral reef, x sin(31°37′), is the other side of the triangle (relative to angle ). The east-west path from dock A to the edge of the coral reef, which is equal to x cos(31°37′), forms the opposite side of the triangle. We're looking for x's number.
The Pythagorean theory allows us to write:
=> (x cos(31°37′) + 2599) + (x sin(61°37′)) = (x sin(31°37′))
By condensing and rearrangeing, we obtain:
=> x² - 5198x + 6790401 = 0
We can use the quadratic formula to answer the following quadratic equation:
=> x = (-(-5198) ± √(-5198)^2 - 4(1)(6790401))) / (2(1))
=> x = (5198 + √(26857604)) / 2
=> x = (5198 ± 5188) / 2
=> x = 5193 or x = 5
The negative answer x = 5 does not make logic in this situation because x is a measure of distance. Consequently, it is roughly 5193 feet from pier A to the coral reef.
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A skateboard ramp is 4.1 feet high and 6 feet long along the horizontal. To the nearest
tenth of a degree, what is the measure of the angle that the ramp makes with a
horizontal line?
34.3°
55.7°
90°
46.9⁰
Answer: :)
Step-by-step explanation:
To find the angle that the ramp makes with a horizontal line, we need to use trigonometry. The angle we are looking for is the angle between the ramp and the ground, which is the same as the angle between the hypotenuse of a right triangle (the ramp) and its adjacent side (the ground).
We can use the tangent function to find this angle:
tan(theta) = opposite/adjacent
In this case, the opposite side is the height of the ramp (4.1 feet) and the adjacent side is the length of the ramp along the ground (6 feet). So we have:
tan(theta) = 4.1/6
Using a calculator, we can solve for theta:
theta = tan^-1(4.1/6)
theta ≈ 34.3°
Therefore, to the nearest tenth of a degree, the measure of the angle that the ramp makes with a horizontal line is 34.3°.
The graph shows the cube root parent function
The true statement is A, for x < 0 the function is negative.
Which statements describe the graph of the function?On the image we can see the graph of the parent cube root function.
y = ∛x
And we want to see which statements are true. Remember that the function is negative if the graph is below the x-axis and positive if it is above, using that we can analyze the graph.
First, notice that for x < 0 the graph is below the x-axis, then the first statement is true.
When x < 0, the function is negative.
So the only correct option is A.
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Suppose that during a test drive of two cars, one car travels 234 miles in the same time that a second car travels 180 miles. If the speed of the first car is 12 miles per hour faster than the speed of the second car, find the speed of both cars.
Answer:
Let's denote the speed of the second car as x (in miles per hour). Then the speed of the first car is 12 miles per hour faster, which is x + 12.
We know that both cars traveled the same amount of time, so we can use the formula:
distance = speed × time
For the first car, we have:
234 = (x + 12) × time
For the second car, we have:
180 = x × time
We want to find the speeds of both cars, so we need to solve for x and x + 12. We can start by solving for time in both equations:
time = 234 / (x + 12)
time = 180 / x
Since both expressions are equal to time, we can set them equal to each other:
234 / (x + 12) = 180 / x
To solve for x, we can cross-multiply and simplify:
234x = 180(x + 12)
234x = 180x + 2160
54x = 2160
x = 40
Therefore, the speed of the second car is 40 miles per hour, and the speed of the first car is x + 12 = 52 miles per hour.
Step-by-step explanation:
Answer:
Let x = speed of first car x + 12 = speed of second
Step-by-step explanation:
PLS HELP- A satellite can move at 17,000 miles per hour. How many hours will it take to reach a star that is three light years away? Recall that 1 light year = 9.5 ∙ 1012 kilometers and 1 kilometer = 0.62 miles. Show your work.
Answer:
3.465 x 10⁸ hours
or
346,500,000 hours
Step-by-step explanation:
Distance to travel to star = 9.5 x 10¹² kilometers
1 kilometer = 0.62mile
Therefore
9.5 x 10¹² km = 9.5 x x 10¹ x 0.6 miles
= 5.89 x 10¹² miles
Speed of satellite = 17,000 mph
In scientific notation
17,000 = 17 x 10³ = 1.7 x 10⁴ mph
Time taken to reach star at distance of 5.89 x 10¹² miles
= 5.89 x 10¹² miles/1.7 x 10⁴ mph = 5.89/1.7 x 10¹²/10⁴
= 3.465 x 10¹²⁻⁴
= 3.465 x 10⁸ hours
= 346,500,000 hours
help on this of math
The required value of x for the given figure is 2√7 units.
What is right angled triangle?A right triangle, also known as a right-angled triangle, right-perpendicular triangle, orthogonal triangle, or formerly rectangled triangle, is a triangle with one right angle, or two perpendicular edges. The foundation of geometry is the relationship between the sides and other angles of the right triangle.
According to question:In the given figure we have two triangle big and small triangle.
To find the value of x;
first we use Pythagoras theorem in big triangle.
So; let base of big triangle is b
9² = 7² + b²
b² = 81 - 49
b = √32
Now in small triangle;
(√32)² = x² + 2²
32 = x² + 4
x² = 28
x = √28
x = 2√7 units.
Thus, required value of x is 2√7 units.
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why the nature of the roots depend on the value of the discriminant
The value of a discriminant determines the kind of roots in a quadratic equation, and the sign of a discriminant indicates whether the roots were real or complex, unique or recurring.
What does a math quadratic equation mean?Definitions: x ax2 + bx + c = 0 is a quadratic equation, which is a 2nd quadratic formula in a single variable. a 0. It has at most one solution since it is a 2nd quadratic problem, which is guaranteed by the algebraic basic theorem. The solution could be straightforward or difficult.
How do you determine whether an equation is quadratic?To put it another way, if a twice the square of a expression that comes after b plus b times the same expression never squared plus c equals 0.
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All items produced in a factory are checked for defects. of the 300 items checked 3% more found to be defective. how many at the items check to work correctly?
72 items were checked to work correctly.
What is the solution of algebraic expression?
Finding the value of the variable is part of solving an algebraic statement. We must do certain algebraic operations to determine the value of one of the variables in the linear equations before we can substitute that value to get the value of another variable.
Then the percentage of defective items in the checked batch is x + 3%.
We know that out of 300 items, this percentage represents the number of defective items. So we can write:
(x + 3%) * 300 = number of defective items
Simplifying this equation, we get:
3x + 9 = number of defective items
number of items checked - number of defective items = number of items checked to work correctly
Substituting the equation we derived above for the number of defective items, we get:
300 - (3x + 9) = number of items checked to work correctly
Simplifying this equation, we get:
291 - 3x = number of items checked to work correctly
3x = number of defective items in a batch of 300 items with the normal percentage of defects
Substituting this expression for the number of defective items in our previous equation, we get:
291 - 3x = number of items checked to work correctly
Now we can solve for x:
3x = number of defective items in a batch of 300 items with the normal percentage of defects = x/100 * 300
3x = 3 * (300 - number of items checked to work correctly - number of defective items)
3x = 900 - 3(3x + 9)
3x = 900 - 9x - 27
12x = 873
x = 73
So the normal percentage of defective items is 73%.
Now we can find the number of items checked to work correctly:
291 - 3x = 291 - 3(73) = 72
Therefore, 72 items were checked to work correctly.
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ALGEBRA 1 HW!! 35 POINTS!!I WILL GIVE BRAINLYEST FOR ANSWERS
The value of the ratio g(24)/g(21) is 729, and other solutions are shown below
The pattern of the infinite sequenceThe domain and the range of h(n)
Given that
h(n) is the number of houses
The possible values of n and h(n) are whole numbers
So, we have
Domain: All set of whole numbersRange: All set of whole numbersThe values of h(5) and h(11)
Based on the patterns in the sequence, we have
h(n) = n
So, we have
h(5) = 5
h(11) = 11
The explicit function of h(n)
In (b), we have
h(n) = n
The values of s(4) and s(7)
Given that
s(n) is the number of segments
Based on the patterns in the sequence, we have
s(n) = 2n
So, we have
s(4) = 8
s(7) = 14
The growth pattern of s(n)
Above, we have
s(n) = 2n
The above equation is a proportional equation
This means that
The growth pattern of s(n) is linear, with a constant rate of change
The explicit function of s(n)
Above, we have
s(n) = 2n
The table of the infinite sequenceComplete the table for f(5) and f(7)
From the table, we can see that
As n increases, the value of f(n) is divided by 2 to get the next term
So, we have
f(5) = 2/2 = 1
f(7) = 1/2/2 = 1/4
The domain of f(n)
The possible values of n are real numbers
So, we have
Domain: All set of real numbers
The observation of the function
Above, we have
As n increases, the value of f(n) is divided by 2 to get the next term
This means that
As n gets larger and larger, the value of f(n) get halved
A doubling sequence g(n)The value of g(4)
From the question, we have
First term, a = 9
Common ratio, r = 2
This means that
g(n) = 2(9)^n-1
So, we have
g(4) = 2(9)^3
g(4) = 1458
Completing the statements
Based on the function definitions, the statements when completed are
g(n) = g(n - 1) * 2g(n) = g(n - 2) * 4g(n) = g(n - 3) * 8The value of the ratioRecall that
g(n) = 2(9)^n-1
So, we have
g(24) = 2(9)^23
g(21) = 2(9)^20
Divide the equations
g(24) = 2(9)^23
------- ----------
g(21) = 2(9)^20
Evaluate
g(24)/g(21) = 729
Hence, the value of the ratio is 729
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Simply the expression 7h+(6.3d)-15+4d-3.4h
Answer:
See below.
Step-by-step explanation:
We are asked to simplify the expression provided.
An easy way to simplify this expression is by Combining Like Terms.
What is Combining Like Terms?Combining Like Terms means adding terms that are similar, whether that's natural numbers, or variables.
For example, 8x + 9x are like terms since they both have the same variables. There's no exponents or any other variables that make these terms different from each other.
Using what we've learned, let's combine like terms for our problem now.
Combine Like Terms:
[tex]7h+6.3d-15+4d-3.4h[/tex]
[tex]7h - 3.4h = 3.6h[/tex]
[tex]6.3d + 4d = 10.3d[/tex]
-15 has no like terms.
We should have;
[tex]10.3d-15+3.6h[/tex]
This will be our final answer. There's no more like terms to combine and we can't simplify this expression further.
Solve for x 2x+3-4=10
Answer:
x = 5.5
Step-by-step explanation:
2x + 3 - 4 = 10
2x - 1 = 10
2x = 11
x = 5.5
Let's check
2(5.5) + 3 - 4 = 10
11 + 3 - 4 = 10
14 - 4 = 10
10 = 10
So, x = 5.5 is the correct answer.
Answer: x = 5.5
Step-by-step explanation:
To solve, we will isolate the variable x.
Given:
2x + 3 - 4 = 10
Combine like terms on the left side:
2x - 1 = 10
Add 1 to both sides of the equation:
2x = 11
Divide both sides of the equation by 2:
x = 5.5
please help i really need ittt!!!!!!!!!!!!!!!!!!!!!!!!!
A 2.5 m ramp is used to load a truck 1.0 m off of the ground. A man uses 600 N of force to load a box weighing 1200 N. What is the efficiency of the ramp? What is the mechanical advantage of the ramp?
Answer:
To find the efficiency of the ramp, we need to compare the work output to the work input. Work input is the force applied to the ramp multiplied by the distance over which the force is applied, and work output is the weight of the box multiplied by the distance it is lifted.
The force applied to the ramp is 600 N, and the distance over which it is applied is the length of the ramp, which is 2.5 m. So the work input is:
work input = force x distance = 600 N x 2.5 m = 1500 J
The weight of the box is 1200 N, and the distance it is lifted is 1.0 m (the height of the truck). So the work output is:
work output = weight x distance = 1200 N x 1.0 m = 1200 J
The efficiency of the ramp is the ratio of work output to work input:
efficiency = work output / work input = 1200 J / 1500 J = 0.8 = 80%
So the efficiency of the ramp is 80%.
To find the mechanical advantage of the ramp, we need to compare the output force to the input force. The output force is the weight of the box, which is 1200 N. The input force is the force applied to the ramp, which is 600 N.
So the mechanical advantage of the ramp is:
mechanical advantage = output force / input force = 1200 N / 600 N = 2
So the mechanical advantage of the ramp is 2.
Domain
V
m
d
1 of 5 (1 point) | Question Attempt: 1 of 1
Relation 1
t
Function
O Not a function
O Function
Relation 3
Domain Range
d
pencil
sky
sky
sky
Not function.
b
V
N
Range
Domain
Z
X
y
k
O Function
O Not a function
Relation 2
Relation 4
Domain Range
3
-1
-6
-1
-5
4
7
-9
-1
2
Range help please ASAP
Answer:
A part of basic arithmetic, long division is a method of solving and finding the answer and remainder for division problems that involve numbers with at least two digits. Learning the basic steps of long division will allow you to divide numbers of any length, including both integers (positive,negative and zero) and decimals. This process is an easy one to learn, and the ability to do long division will help you sharpen and have more understanding of mathematics in ways that will be beneficial both in school and in other parts of your life.[1]
Step-by-step explanation:
A part of basic arithmetic, long division is a method of solving and finding the answer and remainder for division problems that involve numbers with at least two digits. Learning the basic steps of long division will allow you to divide numbers of any length, including both integers (positive,negative and zero) and decimals. This process is an easy one to learn, and the ability to do long division will help you sharpen and have more understanding of mathematics in ways that will be beneficial both in school and in other parts of your life.[1]