3 years ago

Lalala usa test prep heeeeeheheheheehhheheeehheh

Mathematics

2 answers:

Contact [7]3 years ago

8 0

Answer:

:Dd

Step-by-step explanation:

Eh lalsaaaaaaa salaaaa

BabaBlast [244]3 years ago

4 0

Answer:

Step-by-step explanation:

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What is the answer to<br> -2a-9=6a+15

timurjin [86]

Answer:

$a=-3$

Step-by-step explanation:

$-2a-9=6a+15$

Add 9 to both sides:

$-2a-9+9=6a+15+9$

$-2a=6a+24$

Subtract 6a from both sides:

$-2a-6a=6a+24-6a$

$-8a=24$

Divide both sides by -8:

$\frac{-8a}{-8}=\frac{24}{-8}$

$a=-3$

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3 years ago

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choli [55]

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1/3

Step-by-step explanation:

(7-2)/(17-2)=5/15=1/3

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3 years ago

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Step-by-step explanation:

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2 years ago

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how do you solve -2.8k-4.31=-15.79 or 1.9m-3=-12.31 or 2.1a+1.4=-14.245 or 3.8n-4.8=-21.9 ?

Effectus [21]

Consider posting each question separately, please.

Given <span>-2.8k-4.31=-15.79 :

1) Isolate the "k" term on the left by adding 4.31 to both sides of this equation.
2) Simplify the right side.
3) Divide both sides by -2.8 and you'll have the answer: k = ?</span>

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3 years ago

Teacher takes about 25 minutes to make out a test for a mathematics class. How long will it take to make out tests for all five

Akimi4 [234]

Answer:

2h 5min

Step-by-step explanation:

1 class: 25 min

5 classes: 25 x 5 = 125 min = 2h 5min

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3 years ago