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nekit [7.7K]
3 years ago
7

Can somebody please help me with this ?

Mathematics
1 answer:
Aneli [31]3 years ago
7 0

Answer:

8x, 2x^2, 6xy, 5y.

Step-by-step explanation:

Hello, 5x+3x would be 8x since 5+3 is 8. 7x^2-5x^2 would be 2x^2 since 7-5 is 2 (exponents stay the same). 2xy+4xy is 6xy since 2+4 is 6. Lastly, 8y-3y is 5y since 8-3 is 5.

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a room is 24' long 18' wide and 9'high how many square yards of wallpaper are needed to paper the four walls of the room
sergeinik [125]
1. 24 times 18 times 9 to find area of the walls.
2. Take 3888 and divide that by 4 to get how much you need.
3. Answer is 972

So your final answer should be 972 square yards are needed for 4 walls.

Hope this helped you!
Have a great day.
5 0
4 years ago
–8z – 14z i just need an answer
lilavasa [31]

Answer:

-22z

Step-by-step explanation:

-8z - 14z = -22z // Addition ( - - = +)

7 0
4 years ago
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Solve for x:
777dan777 [17]

Answer:


Step-by-step explanation:

x^2+120=0 can be rewritten as x^2 = - 120.  Taking the square root of both sides, we get x = plus or minus i*√120 = plus or minus i*√4√30, or

x = plus or minus i*2√30

So the correct answer choice here is "None of the above."

6 0
3 years ago
What is the quotient of 2 1/4 and 5/8?
Dmitriy789 [7]
It's simple math, but if you don't understand, we can help. To begin with, you must first convert 2 1/4 to an improper fraction. You'd be left with 9/4 after the conversion. Write out 9/4 ÷ 5/8. After doing so, find the reciprocal of 5/8 (switch the numerator and the denominator). Now, write out the question as 9/4 × 8/5. Multiply straight across, as you do not need common denominators when multiplying or dividing fractions. Your final answer should be 72/20. When simplified, you should get 3 2/20, or when simplified to the smallest amount, 3 1/10. Hope I was clear enough to help! :)
8 0
3 years ago
I need help with these questions
Angelina_Jolie [31]

Answer:

1. x= -2

2. (-2,4)

3. (-4,0) and (0,0)

4. d

6 0
3 years ago
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