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2 years ago

-8= -2(z+7) How do you sovle this equation

Mathematics

2 answers:

Vitek1552 [10]2 years ago

7 0

-8=-2z-14
+2z-8=-14
2z=-14+8
2z=-6
2z\2z=-6/2z
z=3

Anna71 [15]2 years ago

5 0

$-8= -2(z+7)$ Equation

$\dfrac{-8}{-2} =z+7

 
$ $Divide \ both \ sides \ by \ -2$

<span> $\dfrac{8}{2} =z+7$
</span>
$4=z+7

 
$

$4-7=z$ $Subtract \ 7 \ from \ both \ sides$

$z=-3$ $Solution$

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The ratio of the number of Miki's stickers to the number of Ken's

Lera25 [3.4K]

Answer:

Miki had 288 stickers and Ken had 252 stickers.

Step-by-step explanation:

This question is solved using a system of equations.

I am going to say that:

Miki has x stickers.

Ken has y stickers.

The ratio of the number of Miki's stickers to the number of Ken's stickers was 8:7.

This means that $\frac{x}{y} = \frac{8}{7}$ , that is: $7x = 8y$ , or $x = \frac{8y}{7}$

After Miki gave Ken 18 of her stickers, they had the same number of stickers.

This means that:

$x - 18 = y + 18$

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Since $x = \frac{8y}{7}$

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2 years ago

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Answer:

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Goal: Find the closest or equivalent result in another expression

Step-by-step explanation:

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10 months ago