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qwelly [4]
2 years ago
5

Eric took a test with 15 questions. he answered 2/5 of the questions correctly, how many did he get wrong?

Mathematics
1 answer:
givi [52]2 years ago
7 0

Answer: 9

3/5's of 15 = 9

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Completely factor the given expression over the integers.<br><br> (Correct gets brainliest)
elena-14-01-66 [18.8K]

Answer:

50

Step-by-step explanation:

would it be 50 because you the q to the power of 2 is 2q. Then you would subtract to the other side of the equation so it would be -100=-2q. After you would divided the -2 in -2q on both sides and -100/-2 is 50. So your answer is q=50

7 0
3 years ago
3eighths - negitive 5 and 1 fourths
WITCHER [35]
Sorry, what exactly is the question?
8 0
3 years ago
Read 2 more answers
A and b are positive integers. Find <img src="https://tex.z-dn.net/?f=-2a%2B3b" id="TexFormula1" title="-2a+3b" alt="-2a+3b" ali
lord [1]

A could be 2 while B could be 3, so -2a+3b turns into -4+9, which equals 5.

From what I know you can't really solve a a single equation with two-variables so it's just a matter of trial and error.

Just try plugging in a small number like 2 for a just to try it and you get 8b^2=72.

Divide everything by 8 to isolate b and you get that b^2=9.

Square root everything and you'll find that b=3. This is just one possible combination, I'm sure there are many more but this is obviously the one that was intended to be found.

Now that we know that a=2 and b=3 just plug them into the equation.

-2(2)+3(3)=?

-4+9=?

5

Sorry about having to use this ^ symbol, the equation maker is not working.

7 0
3 years ago
Question in the link below.
olga_2 [115]
The 5x  and the combination of (40° + x) are "vertical angles".
Vertical angles are equal.
So
                                             5x = 40° + x

Subtract 'x' from each side:      4x = 40°

Divide each side by  4 :            x =  ?
3 0
3 years ago
Read 2 more answers
-2y+16*4<br> plz answer asap
Sedaia [141]
-2(y-32) i am 99% sure
3 0
3 years ago
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