PLEASE HELP OR IM gonna FAILLLLLLLL!!!!!!!!

Mathematics

1 answer:

podryga [215]3 years ago

3 0

Answer:

Step-by-step explanation:

<h2>Let's break it down: 4^-2 = 1/(4^2)</h2><h2>(1/(4^2))^5 = (1^5)/(4^2)^5 = 1/(4^10)</h2>

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The surface area of a sphere is given by the formula SA = 4r2, where r is the radius of the sphere.

mash [69]

Answer:

r≈4.51yd

Step-by-step explanation:

The surface area of a sphere is given by the formula SA = 4r2, where r is the radius of the sphere. If the surface area of a sphere is 256 square yards, then the radius of the sphere is 4.51yd.

Formula: A=4πr^2

8 0

3 years ago

Read 2 more answers

Is 2/3 greater then1/5

Greeley [361]

Yes, it is. To find this out, you need to make the denominators the same. They can both multiply into 15, so we change the denominators to 15. Whatever we do to the bottom, we also have to do to the top.

2/3 = 10/15

1/5 = 3/15

We can then see that 10 is more than 3 :)

8 0

4 years ago

Which of these is an odd function?

Yakvenalex [24]

Answer:

$f(x)=2x^3+x$

Step-by-step explanation:

An odd function <em>f</em> is one where $f(-x)=-f(x)$ . We can interpret this is meaning: reflecting the graph horizontally $f(-x)$ has the same effect as reflecting it vertically $-f(x)$ . The only graphs that meet this requirement are ones with reflectional symmetry across the line y = x, so we can immediately elimate the functions $f(x)=3x^2+7$ and $f(x)=5x^2-6$ , which have horizontal symmetry, but not the kind of symmetry we're looking for.

That leaves us with $f(x)=2x^3+x$ and $f(x)=4x^3+2x^2$ . One feature of exponents we can utilize is that -1 to an even power is 1, while -1 to an odd power is -1. If we want $f(-x)=-f(x)$ , we need to flip the signs of <em>all </em>the coefficients, and we can only do that if all the powers of x are odd. The only function with only odd powers of x is $f(x)=2x^3+x$ , and plugging in -x to the function reveals that