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3 years ago

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MA_775_DIABLO [31]3 years ago

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hi I cant answer idk why

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(8CQ) Find the sum of the geometric series. <br> 20-10+5-5/2+...

Ivahew [28]

Answer:

b. $\frac{40}{3}$

Step-by-step explanation:

The given geometric series is;

$20-10+5-\frac{5}{2}+...$

The first term of this series is

$a_1=20$

The common ratio is

$r=\frac{-10}{20}=-\frac{1}{2}$

The sum to infinity of this series is

$S_{\infty}=\frac{a_1}{1-r}$

Substitute the given values to obtain;

$S_{\infty}=\frac{20}{1--\frac{1}{2}}$

This implies that;

$S_{\infty}=\frac{20}{\frac{3}{2}}$

$S_{\infty}=\frac{40}{3}$

8 0

3 years ago

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Nine times a number divided by 2 equals 54.

bazaltina [42]

x = the unknown number

$\frac{9x}{2} =54$

nine <u>times</u>(multiplication) a number(x) divided(division) by 2 equals(=) 54,

so 9x is divided by 2

4 0

4 years ago

If y= 1/2x-2 determine the value of y when x= -12.

OLEGan [10]

Y should be equal to negative 8 (aka -8)

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3 years ago

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Find the volume for a can of corn with a diameter of 3 inches and a height of 6 inches:

kodGreya [7K]

42.41 cubic inches

(rounded)

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3 years ago

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Consider the equation f(x) = x2 - 4x – 45 One of the zeros of the function is x = -5. What is the other zero? The other zero is

Genrish500 [490]

Answer:

the zeros are x= -9 and x=5

Step-by-step explanation:

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3 years ago