6y-6y-12y=please help me

2 answers:

7 0

Hello.

The answer is

-12y

Combine Like Terms:=6y+−6y+−12y=(6y+−6y+−12y)=−12y

Have a nice day

Hunter-Best [27]2 years ago

4 0

The answer is -12y

Explanation:
Since all the numbers have a common variable you can just add all of them together.
6y - 6y = 0
0 - 12y = -12y

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If y varies inversely as x and y is 2.5 when x is 6, what is y when x is 4? a. 3.75 b. 1.67 c. 0.1 d. 7.5 Please select the best

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Because y varies inversely as x, therefore
$y= \frac{k}{x}$
where k = constant.

When x = 6, y = 2.5. Ther efore
$\frac{k}{6} = 2.5$
Cross multiply.
k = 6 x 2.5 = 15

The equation is
$y = \frac{15}{x}$

When x = 4, obtain
$y = \frac{15}{4}= 3.75$

Answer: a. 3.75

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