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3 years ago

8

I need helpppp!!!!!!

1 answer:

Marrrta [24]3 years ago

4 0

Answer:

just add all of them up

Step-by-step explanation:

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Pregón de servicio<br>kjjj

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3 years ago

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elaine's mother is now 38 years old. seven years from now she will be five times as old as elaine will be then. write and solve

vfiekz [6]

In seven years her mother will be 38 +7 = 45 years old.

She will be 5 times as old, so divide 45 by 5: 45/5 = 9. Elaine will be 9 years old then, so she is 9-7 = 2 years old now.

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3 years ago

Use the definition of a derivative to find f’(x).

tatyana61 [14]

Answer:

f'(x) = $-\frac{9}{x^2}$

Step-by-step explanation:

i) f(x) = 9 / x

ii) f'(x) = $$\lim_{h\to 0} \frac{f(x+h) - f(x)}{h} $ \hspace{0.2cm}$

$= $\lim_{h\to 0} \frac{\frac{9}{x+h} - \frac{9}{x} }{h} = \hspace{0.1cm} $\lim_{h\to 0} \frac{9x - 9(x+h)}{hx(x+h)} $ \hspace{0.1cm} = \hspace{0.1cm}$\lim_{h\to 0} \frac{-9h}{hx(x+h)} = $\lim_{h\to 0} \frac{-h}{x(x+h)} = \frac{-9}{x^2}$$

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3 years ago

How to solve proportions

Delicious77 [7]

Step-by-step explanation:

stating the ratios as fractions, setting the two fractions equal to each other, cross-multiplying, and solving the resulting equation

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2 years ago

Need help quick!<br> What is the product? <br>(-1 2 4) (3 6 1 2 4 0 0 6 2)

vaieri [72.5K]

Answer:

[1 26 7]

Step-by-step explanation:

[1 26 7]

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