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Rus_ich [418]
3 years ago
7

Perform the indicated operation. -8 + (-4)

Mathematics
1 answer:
Lostsunrise [7]3 years ago
3 0

It is -12, negative + negative is Negative unless if its with a positive it will cancel out

ex, -12 + 6= -6

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Estimate by rounding 642÷83
Sunny_sXe [5.5K]

8

round each number to the nearest 10, then

640 ÷ 80 = 8 ← estimate


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Can someone help me find the value of x
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Simplify<br>1)5x+3=x+13<br>2)5/2x-1/X =1/6​
Artyom0805 [142]

Step-by-step explanation (Question 1):        

<u>Step 1: (Question 1): Subtract x from both sides.</u>

5x+3=x+13

5x+3−x=x+13−x

4x+3=13

<u>Step 2: (Question 1): Subtract 3 from both sides.</u>

4x+3−3=13−3

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<u>Step 3: (Question 1): Divide both sides by 4.</u>

4x/4 = 10/4

FIRST ANSWER: x = 5/2

Step-by-step explanation (Question 2):      

<u>Step 1: (Question 2): Multiply by LCM</u>

15x^2 - 6 = x

<u>Step 2: (Question 2): Solve 15x^2</u>

15x^2 - 6 = x:

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x = -3/5

<u>Step 3: (Question 2): Solve</u>

ANSWER: x=0.666667 or x=−0.6

See Attachment 1 for question 1 steps (FULL)

See Attachment 2 for question 2 steps (FULL)

Answer:    

1)   x = 5/2

2)  x=0.666667 or x=−0.6

 

Hope this helps.

8 0
3 years ago
Read 2 more answers
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QveST [7]
I believe that 30.5 as a fraction is 30 and 1 half but don't take my word
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