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Aneli [31]
3 years ago
12

Why is the mechanical advantage of using a single pulley always 1? Assume there’s no friction. A. The input force is in a differ

ent direction than the output force. B. The input force is less than the output force. C. The input force is greater than the output force. D. The input force is equal to the output force.
Mathematics
1 answer:
Luba_88 [7]3 years ago
8 0

Answer:

  D. The input force is equal to the output force

Step-by-step explanation:

A pulley changes the direction of the applied force, but does not change its magnitude. The mechanical advantage is the ratio of output force to input force, so must be 1 when the force magnitude does not change.

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The answer is A because 12.5 plus 0.75 is 13.25. Then muiltiply it with g to find total cost.
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Order each set of numbers from least to greatest {7 , 9 √50, √85
Oksi-84 [34.3K]

Answer:

7,√50,9,√85

Step-by-step explanation:

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8 0
3 years ago
Y=x²-6x+8 what is y when x is 0?
jarptica [38.1K]

Answer:

The value of y is 8.

Step-by-step explanation:

In order to find the value of y, you have to put in x = 0 into the equation :

y =  {x}^{2}  - 6x + 8

Let x = 0,

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6 0
4 years ago
What is the first step to take when solving this linear system of equations by the addition-subtraction method? 2x + 4y = 3 x +
Free_Kalibri [48]

The right answer is Option D.

Step-by-step explanation:

Given equations are;

2x+4y=3    Eqn 1

x+3y=13    Eqn 2

When we use subtraction-addition method, we make one of the variables same with opposite signs so that only one variable remains after addition or subtraction.

In the given problem, we will multiply Eqn 2 with "-2" so that the x variables become equal and then we can add both the equations and solve for y.

Therefore,

The first step will be to multiply the second equation by -2 to solve the linear system of equations.

The right answer is Option D.

Keywords: linear equations, subtraction

Learn more about linear equations at:

  • brainly.com/question/8902155
  • brainly.com/question/8955867

#LearnwithBrainly

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Vlad1618 [11]
After plotting all the points, the only one that makes sense is (4,3).

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