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Sindrei [870]
3 years ago
10

If f(x) = 56-2x, find f(7)

Mathematics
2 answers:
Lorico [155]3 years ago
3 0

Answer: 42

Step-by-step explanation:

Simply substitute 7 for x.

56 - 2(7)

56 - 14

42

Hope it helps <3

tensa zangetsu [6.8K]3 years ago
3 0

Answer:

f(7)=42

Step-by-step explanation:

f(x)=56-2x

Here put x=7

f(7)=56-2(7)

f(7)=56-14

f(7)=43

I hope this will help you :)

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3 years ago
A diver dives from the board at a local swimming pool. Her height, y, in metres, above the water in terms of her horizontal dist
Aneli [31]

Answer:

4 meters

Step-by-step explanation:

Given a quadratic equation in which the coefficient of x^2 is negative, the parabola opens up and has a maximum point. This maximum point occurs at the line of symmetry.

Since the divers height, y is modeled by the equation

y= -x^2 + 2x + 3

Step 1: Determine the equation of symmetry

In the equation above, a=-1, b=2, c=3

Equation of symmetry, x=-\dfrac{b}{2a}

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Step 2: Find the value of y at the point of symmetry

That is, we substitute x obtained above into the y and solve.

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8 0
3 years ago
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Harlamova29_29 [7]

Answer:

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3 0
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2 years ago
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