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3 years ago

20 POINTS ANSWER QUICK PLEASE!! SHOW ALL WORK

Mathematics

1 answer:

katen-ka-za [31]3 years ago

4 0

5x+8=4(3x+9) 5x+8=12x+36. 5x=12x+28

-7x=28. Divide both sides by -7 so x=-4

4y+8=4(2y-5). 4y+8=8y-20. 4y=8y-28

-4y=-28. Divide both sides by -4 so y=7

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Step-by-step explanation:

A graph quickly shows the answer to this question.

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Ghella [55]

Answer:

vertex = (4, - 8 )

Step-by-step explanation:

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3 years ago

The price of a stock decreased by 60 cents one week, decreased 10 cents the next week, and decreased another 20 cents the follow

mel-nik [20]

Hi there! Hopefully this helps!

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It decreased by 30 cents per week.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The average rate of change is calculated as:

the ratio of the sum of the change in the three weeks divided by the number of weeks. (The number of weeks being 3)

Rate of change = $\frac{-60 -10 -20}{3}$ .

(-60 + -10 + -20 = -90). So, to simplify it:

$\frac{-90}{3}$ = -30

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Incase you are confused:

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T = 3U / E solve for U

Rashid [163]

T = 3U / E solve for U

3U = T * E
U = (T * E)/3
U = 1/3(TE)

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