2 years ago

Assessment 2 Solving Equations (w. Distribution). -7(-x + 8) + 2x = -5 - 8x show your work pleaes

Mathematics

2 answers:

Anton [14]2 years ago

6 0

Answer:

x=3. answer explained in picture

Jlenok [28]2 years ago

4 0

Answer:

-11-8 + 80 - -9

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heres an example...

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2 years ago

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!

hichkok12 [17]

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<u>Step-by-step explanation:</u>

Given the sequence {-3, 6, -12, 24, ... }, we can see that the first term (a) is -3 and the ratio (r) is $\dfrac{6}{-3} = -2$ .

Input those values into the Sum formula:

$S_n=\dfrac{a(1-r^n)}{1-r}\\\\S_7=\dfrac{-3(1-(-2)^7)}{1-(-2)}\\\\.\quad=\dfrac{-3(1-(-128))}{1+2}\\\\.\quad=\dfrac{-3(1+128)}{3}\\\\.\quad=\dfrac{-3(129)}{3}\\\\.\quad=-129$

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