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3 years ago

14

What makes composing functions different from doing an arithmetic operation of two functions such as adding or dividing them?

1 answer:

Sati [7]3 years ago

3 0

Answer:

the answer is that one tells about nomadic responses

while the other talks about seramic responses

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X to the third power = 125/27

nika2105 [10]

When raising a fraction to a power, we can raise the numerator and denominator to the power. To find x, we need to find the cube root of both 125 and 27. That is, the numbers that when multiplied by themseelves 3 times result in 125 and 27.

$\sqrt[3]{125} = 5$

$\sqrt[3]{27} =3$

So x = $\frac{5}{3}$

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3 years ago

What is the inverse of {(2, 4), (-3, 5), (7, -1), (9, 0)}?

jok3333 [9.3K]

Answer:

(4,2),(5,−3),(−1,7),(0,9)

Step-by-step explanation:

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2 years ago

You practice piano for 50 minutes each weekday and for 40 minutes on each weekend day. how many hours per week do you practice?

Pavel [41]

Answer:

330 minutes a week

Step-by-step explanation:

50 x 5= 250 then add 80 because 40 x 2 is 80 and get 330

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3 years ago

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3 years ago

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The maximum value of the function: f(x)= -5 x ^2 +30x-200 is?

VARVARA [1.3K]

Answer:

$\displaystyle - 155$

Step-by-step explanation:

we are given a quadratic function

$\displaystyle f(x) = - 5 {x}^{2} + 30x - 200$

we want to figure out the minimum value of the function

to do so we need to figure out the minimum value of x in the case we can consider the following formula:

$\displaystyle x _{ \rm min} = \frac{ - b}{2a}$

the given function is in the standard form i.e

$\displaystyle f(x) = a {x}^{2} + bx + c$

so we acquire:

b=30
a=-5

thus substitute:

$\displaystyle x _{ \rm min} = \frac{ - 30}{2. - 5}$

simplify multiplication:

$\displaystyle x _{ \rm min} = \frac{ - 30}{ - 10}$

simply division:

$\displaystyle x _{ \rm min} = 3$

plug in the value of minimum x to the given function:

$\displaystyle f (3)= - 5 {(3)}^{2} + 30.3 - 200$

simplify square:

$\displaystyle f (3)= - 5 {(9)}^{} + 30.3 - 200$

simplify multiplication:

$\displaystyle f (3)= - 45 + 90- 200$

simplify:

$\displaystyle f (3)= - 155$

hence,

the minimum value of the function is -155

5 0

2 years ago