Find the sum.
5x 4
____ + ____
7x - y y - 7x
1 answer:
Answer:
B. 5x+4
Step-by-step explanation:
Solving this is quite easy.
- Add 5x and 4 getting 5x+4
- Look at your bottom variables..since 7x and -7x are opposites they will cancel out! And same thing goes for y and -y.
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Answer:
9
Step-by-step explanation:
7r+18=r²
r²-7r-18=0
factorizing
r²+2r-9r-18=0
r(r+2)-9(r+2=0
(r-9)(r+2)=0
r-9=0
r=9
check
(r²)=(9*9)=81
7r+18=7(9) + 8=81
Answer:
8000000000
Step-by-step explanation:
8 times 10^9 = 8000000000
The correct answer is D.Please mark me as Brainliest!
A=0 b=5 c=6 esaaa es!!!!!!
