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3 years ago

HELP PLEASE?!

Mathematics

1 answer:

ollegr [7]3 years ago

5 0

Answer:

Step-by-step explanation:

When we use the scale factor

The lengths increase by the scale factor

the area increases by the scale factor squared

The volume increases by the scale factor cubed

The scale factor is 2

We want the volume

2^3 = 8

The volume is increased by a factor of 8

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Question 5 Multiple Choice Worth 1 points)

postnew [5]

Answer:

i have no clue but good luck

Step-by-step explanation:

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2 years ago

Help with num 9 please. thanks

Alik [6]

Answer:

See Below.

Step-by-step explanation:

We want to show that the function:

$f(x) = e^x - e^{-x}$

Increases for all values of x.

A function is increasing whenever its derivative is positive.

So, find the derivative of our function:

$\displaystyle f'(x) = \frac{d}{dx}\left[e^x - e^{-x}\right]$

Differentiate:

$\displaystyle f'(x) = e^x - (-e^{-x})$

Simplify:

$f'(x) = e^x+e^{-x}$

Since eˣ is always greater than zero and e⁻ˣ is also always greater than zero, f'(x) is always positive. Hence, the original function increases for all values of x.

8 0

3 years ago

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Stolb23 [73]

Answer:

8.4

Step-by-step explanation:

50 ÷ 25 = 2

(2)2 x 7 x 0.3

4 x 2.1

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5 0

2 years ago

Read 2 more answers

You are planning to save for retirement over the next 35 years. to do this, you will invest $870 a month in a stock account and

DaniilM [7]

Go to mathpapa thats what i use

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3 years ago

Evaluate the expression when x=-6. x² + 5x-5

Rus_ich [418]

Answer:

Step-by-step explanation:

x² + 5x-5

Let x = -6

(-6)^2 + 5(-6) -5

36 -30 -5

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3 years ago