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IgorC [24]
2 years ago
6

Solve f(x)=0 and Compute f(0) given f(x)=2x-7.

Mathematics
2 answers:
Zarrin [17]2 years ago
7 0

Step-by-step explanation:

f(x)=2x-7.

by substituting value 0 for x,

f (0)=2×0-7

f (0)=-7

levacccp [35]2 years ago
5 0

Answer:

Step-by-step explanation:

_______

Good evening ,

_______________

f(x)=0 ⇔ 2x-7 = 0 ⇔ 2x = 7 ⇔ x = \frac{7}{2}

:)

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Solving a system of equations, we can see that:

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<h3>How to find the speeds of each jet?</h3>

Let's define the variables:

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With the given information, we can write:

P*8h = D

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So we have a system of 3 equations, where D is the distance in the problem.

With the first and second equations we can write:

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Isolating P, we get:

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Now we can replace that in the last equation:

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And now we can solve that for C.

C - 2*(7/8)*C = - 144mi/h

C*(1 - 14/8) = -144mi/h

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C = (8/6)*144mi/h = 192mi/h

Now that we know the speed of the commercial jet, we can find the speed of the private jet.

P = C*(7/8) = 192mi/h*(7/8) = 168 mi/h

If you want to learn more about systems of equations:

brainly.com/question/13729904

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