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Scrat [10]
3 years ago
8

Evaluate the function. Find f(5). f(x)=2x2-1. The second 2 is a exponent

Mathematics
1 answer:
nata0808 [166]3 years ago
4 0

Answer:

f(x)=2x^2-1\\f(5)=2(5)^2-1\\f(5)=2(25)-1\\f(5)=50-1\\f(5)=49

Step-by-step explanation:

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A circle has a circumference of 9π what is the diameter?
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C=πd  where C=circumference, π=the constant pi, and d=diamter

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d=9
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3 years ago
Find the value of x in 4:x::x:16
AnnyKZ [126]

Given:

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It can be rewritten as

\dfrac{4}{x}=\dfrac{x}{16}

On cross multiplication, we get

4\times 16=x\times x

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Step-by-step explanation:

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Two students wanted to race 100 yards across a football field. How many feet will they run? (
Molodets [167]

Answer:

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Step-by-step explanation:

6 0
2 years ago
A regular octagon has a radius of 6 ft and a side length of 4. 6 ft. A regular octagon has a radius of 6 feet and side lengths o
skad [1K]

The regular octagon has eight equal sides. Then the area of the regular octagon of side length be 4.6 is 102 ft².

<h3>What is a regular octagon?</h3>

It is a polygon that has eight equal sides. In a regular octagon, the opposite sides are parallel. And its diagonals are also equal and intersect at mid-point.

Given

A regular octagon has a radius of 6 ft and a side length of 4.6 ft.

We know the formula for the regular octagon.

Area of the regular octagon = 2(1 + \sqrt{2}) a²

Where a be the side of a regular octagon.

Then the area of the regular octagon will be.

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Thus, the area of the regular octagon of side length be 4.6 is 102 ft².

More about the regular octagon link is given below.

brainly.com/question/858868

6 0
2 years ago
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