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alekssr [168]
3 years ago
5

If (a+b)= -5 and ab= -150 , find a-b

Mathematics
1 answer:
yan [13]3 years ago
6 0

Answer:

(a-b) = -25

Step-by-step explanation:

(a+b) = -5

a*b=-150

So one of the letters have to be negative as you can only get a negative product from a positive and negative

There is probably a better way to do this, but I just plug in numbers that I think will work

So, (a*b) = -150, (-15*10) = -150

Okay that works so lets try the other one

(-15+10) = -5

This also works, so lets do the third one

(-15-10) = -25

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4/9 of students at a school are boys. If there are 2322 students at the school, how many are girls?
Semmy [17]
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2 years ago
Could someone explain why (-4)² is equal to 16 but -4² is equal to -16​
erica [24]

Answer:

It's all about the brackets.

Step-by-step explanation:

If we do (-4)^2, the brackets make it -4 x -4 and the two negatives make a positive of 16.

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Hope this helps!

treviglaslibrary

8 0
3 years ago
Read 2 more answers
What is one thousand minus seven?
rodikova [14]

The answer for one thousand minus seven is 993

4 0
4 years ago
HELP please :)
ankoles [38]
X is the amount of distilled water that must be added (in milliliters)
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3 years ago
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