MATHEMATICS MIDDLE SCHOOL

Which of the following are possible ways to eliminate a variable by multiplying first?−x + 4y = 5
9x − 3y = 21

A. Multiply the first equation by 3 and the second equation by 4.
B. Multiply the first equation by 4 and the second equation by 3.
C. Multiply the first equation by 3 and the second equation by 9.
D. Multiply the first equation by 9 and the second equation by 4.
E. Multiply the second equation by 9.
F. Multiply the first equation by 9.

Answers

Answer 1
Answer:

Answer:

A

Step-by-step explanation:

The answer is A nd i'm 100% sure

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PLEASE HELP I GIVE THANKS
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I was wondering if somebody could teach me Algebra easily. I am only in Elementary school but I can pick things up quickly. I am giving you ALL my thanks if you could do this for me!!

Answers

Algebra is just replacing numbers with symbols. Usually x and/or y. if x=3 then 5x=15. this is the basic idea of algebra is that you take real and imaginary numbers and make a symbol of it and find what he symbol mean.

algebra is numbers and variable's. You will learn a bit of it in 6th grade.you have to find x or do some other things.

https://www.youtube.com/watch?v=3vDoEVRS_7s

^^^ gives a good example I do Not own the video all rights go to the owner. its on you tube!

Summarize the rules for multiplying powers with the same base, dividing powers with the same base, and raising a power to a power.

Answers

To multiply two expotential terms with the same base, add their exponents. To raise a power, multiply the exponents. To divide two expotential terms with same base, subtract the exponents.

(4x³-5x+10) ÷ (x+1)​

Answers

Answer:

4x^2 − 4x −1 + 11 / x+1

Step-by-step explanation:

The answer is

4x^2 − 4x −1 + 11 / x+1

Answer:

4x^3 - 4x + 11

Step-by-step explanation:

Simplify the expression.

I need help with this please.

Answers

Answer:

113 m^2

Step-by-step explanation:

Breal down the shape into two rectangles and find the area of each one to get 113.

An employee earned $56,700.00 in a year and had $8,788.50 withheld for federal income tax. What federal income tax percent was withheld? if necessary, round your answer to the nearest hundredth of a percent. (Hind: write out a verbal sentence of what you are trying to find, then turn into a mathematical equestion to solve)Show your setup as well as answer.

Answers

so earned 56,700 in a year and had 8,788.5 held back
convert to percent

so find what percent was withhelald which is (amount held back)/(total taken from)
so it would be 8,788.5/56,700=0.155/1
percent means parts out of 100 or x/100=x% so convert the bottom number ot 100 by mulitplyint the whole fraction by 1 or 100/100 so
0.155/1 times 100/100=15.5/100=15.5%
the answer is 15.5%

X/6 = -1
The answer choices are -6
8
7
-3
-2

Answers

Answer:

x=-6

Step-by-step explanation:

We want to get the variable by itself

In order to do this, we must multiply both sides by 6. Since x is being divided by 6, we want to do the opposite.

x/6=-1

6*x/6= -1*6

x=-6

Hope this helps! :)

Answer:

-6

Step-by-step explanation:

You multiply both sides by 6 so x/6*6=-1*6 so x=-6
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