What is 10 percent of 80
Answers
X/80 = 10/100
so you cross multiply and get 100x = 800
divide by one hundred on both sides…
and your answer is 8
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Nina and Krissy have to read different books for Ms. Lester's English class. Nina has read 32 pages of her 110-page book. Krissy has read 55 pages of her book, but she and Nina still need to read the same number of pages to finish their books. Which equation can be used to find k, the total number of pages in Krissy's book?
Help help help help help help help
Answers
3a+7b+2c-a-4b
-8a-b-(-6c)-2a-b-5c
b-4c+3a-c-9b-4a
Answers
use associative property which is
(a+b)+c=a+(b+c)
also -a+b-c=(-a)+(b)+(-c) so you can move them around
and remember that:
you just use a general rule
x+x=2x
x^2+x^2=2x^2
3xy4xy=7xy
3x+4x^2=3x+4x^2
youcan only add like terms( like terms are terms that are same name like xor y are differnt, and like terms have same power exg x^2 and x^3 andx^1/2 and such
I will oly put the naswers because I don't have much time
first one: 2a+3b+2c
second one: remember that -(-6c)=+6c so the answer is c-10a-2b
third one: -a-8b-5c
1. > 10
Answers
First, we can start off by making our goal to get the variable (n) on one side by itself. Let's begin by multiplying both sides by 5.
Second, multiply 10 times 5. This can be done using a calculator, in your head, etc. (10 times 5 = 50)
Third, we will continue getting the variable alone by subtracting 1 from each side.
Fourth, simple step. Subtract 50 - 1 (= 49).
Fifth, now we can divide each side by -7. This will complete our goal since the variable will be by itself. Since the -(7) is carrying a negative, we can put that in front of our fraction.
Sixth, our last step is to simplify the fraction. We can do this by asking ourselves, what multiples by 7 to equal 49? (7 times 7 = 49), so 7 is our answer. Don't forget the negative.
Answer:
Answers
90 is one-fourth of 360.
We have,
To find one-fourth of 360, we divide 360 by 4.
Dividing 360 by 4 gives us the result of 90.
Therefore, one-fourth of 360 is 90.
To explain further, one-fourth of a number is the same as dividing the number by 4.
In this case, when we divide 360 by 4, we obtain the result of 90.
Thus,
90 is one-fourth of 360.
Learn more about expressions here:
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Answers
Substitute 1 for a and 20 for b;
c^2=1+400
c^2=401
c=
which is about 20.02
Hope this helps.
If the lengths of two of the sides of a triangle are 1 and 20,
then the third side can be any length between 19 and 21.
It's not possible to calculate it exactly until we know
more information about the triangle.
For example, if the triangle is a right triangle,
then the length of the third side is
either √401 = roughly 20.025
or √399 = roughly 19.975 .