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3 years ago

(3x + 5) (10x - 7)º

Mathematics

1 answer:

ella [17]3 years ago

8 0

Answer:

180 i think but idrk

Step-by-step explanation:

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Read 2 more answers

Please Help ASAP Evaluate (64^1/2)^-2/3

Naya [18.7K]

Answer:

Option A.

Step-by-step explanation:

The given expression is,

$[(64)^{-\frac{1}{2}}]^{-\frac{2}{3}}$

By solving the given expression,

$(64)^{-\frac{1}{2}}=\frac{1}{(64)^{\frac{1}{2}}}$ [Since $a^{-1}=\frac{1}{a}$ ]

$=\frac{1}{\sqrt{64}}$

$=\frac{1}{8}$

Now the expression will be,

$[(64)^{-\frac{1}{2}}]^{-\frac{2}{3}}=(\frac{1}{8})^{-\frac{2}{3}}$

$=8^{\frac{2}{3}}$

$={(\sqrt[3]{8})^2}$

= 2²

= 4

Therefore, value of the given expression will be 4.

Option (A) will be the answer.

7 0

3 years ago

Consider f(x)=2|x|

shusha [124]

Answer:

Please check the explanation.

Step-by-step explanation:

As we know that the average rate of change of f(x) in the closed

interval [a, b] is

$\frac{f\left(b\right)-f\left(a\right)}{b-a}$

Given the interval [a, b] = [0, 4]

$f(x)=2|x|$

$f(b)=f(2)=2\cdot \:4$ ∵ $\mathrm{Apply\:absolute\:rule}:\quad \left|a\right|=a,\:a\ge 0$

$= 8$

$f(x)=2|x|$

$f(a)=f(0)=2\cdot \:0$ ∵ $\mathrm{Apply\:absolute\:rule}:\quad \left|a\right|=a,\:a\ge 0$

$= 0$

so the average rate of change :

$\frac{f\left(b\right)-f\left(a\right)}{b-a}=\frac{8-0}{4-0}$

$=\frac{8}{4}$

$= 2$

We know that a rate of change basically indicates how an output quantity changes relative to the change in the input quantity. Here, it is clear the value of y increase with the increase of input.

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3 years ago

Suppose n is an integer. Is n2 +n always, sometimes, or never an even integer? Explain.

romanna [79]

Is the 2 an exponent? if so, it is always an even integer.

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3 years ago