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love history [14]
3 years ago
8

Help with this math question please

Mathematics
2 answers:
Soloha48 [4]3 years ago
8 0
The answer will be 23

Because -13-(-10) you have to make the minus sign into Addtion because you already have a negative which then means you have to make the 10 into a positive
Leni [432]3 years ago
3 0
So when you have a -(-) then you make that a positive so that would mean - (+) so the two - - are positive and just one - is still negative, which would mean that the answer is -3. Because if the negative is greater that the positive then it is still a negative, in your mind you should make 13 positive minus 10 and then add the negative to make things easier if you want to.
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What’s that precent 250 of 275
tester [92]

Answer:

Percent 250 of 275 is 90.9%

Step-by-step explanation:

We have to find 250 is what percent of 275.

Let X be the percentage, then

=> X =  \frac{250}{275} \times 100

Now simplyfying the above relation we get

=> X =  0.909\times 100

=> => X = 90.9 %

Hence 250 is 90.9% of 275

5 0
3 years ago
PLEASE HELP URGENT MY MOM WILL GROUND ME IF I DONT FINISH THIS LOL
exis [7]

Step-by-step explanation:

Hope it helps you in your learning process.

8 0
3 years ago
Prove that there exists a unique real number solution to the equation x3 + x2 − 1 = 0 between x = 2/3 and x=1
ziro4ka [17]
Replace each of the x values given to see if they give 0. 

0=(2/3)³+(2/3)²-1 
0=(8/27)+(4/9)-1 
0≠-0.259

0=(1)³+(1)²-1 
0≠1

Therefore, you can see that the solution would have to be between 2/3 and 1.

Hope I helped :) 
7 0
3 years ago
What is the answer to 39=3m-15
Vladimir [108]
39=3m-15
39+15=3m
54=3m
54/3=3m/3
m=18
4 0
3 years ago
Read 2 more answers
Eric earned 60 points on his last test. If there were 75 possible points, what was his percent grade?
klemol [59]
This is a proportion problem. Eric earned 60 out of a possible 75 points, so the ratio is 60/75. You put that equal to x, so 60=x% and 75=100%. So it would look like
<u>60</u> = <u>  x  </u><u>
</u>75<u />    100
then you cross multiply 60 and 100, and 75 and x, so you get
6000=75x
then divide by 75 and you have your percent :)
8 0
3 years ago
Read 2 more answers
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