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Evgesh-ka [11]
3 years ago
10

Percentage are dogs?

Mathematics
1 answer:
Debora [2.8K]3 years ago
7 0

20% of 200 is 40 so 40 students cannot yet drive.

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Resolver la siguiente ecuación por eliminación o sustitución: a-8b= -9 a-2b= -7
Crazy boy [7]

Answer: Solution: a=\dfrac{-19}{3} and b=\dfrac{1}{3} .

Step-by-step explanation:

The given pair of equations:

a-8b= -9\ ...(i)\\\\ a-2b= -7\ ...(ii)

Eliminate equation (i) from (ii) , we get

-2b-(-8b)=-7-(-9)\\\\\Rightarrow\ -2b+8b=-7+9\\\\\Rightarrow\ 6b=2\\\\\Rightarrow\ b=\dfrac{1}{3}

Put value of b in (ii) , we get

a-2\times\dfrac{1}{3}=-7\\\\\Rightarrow\ a=-7+\dfrac{2}{3}\\\\\Rightarrow\ a=\dfrac{-21+2}{3}\\\\\Rightarrow\ a=\dfrac{-19}{3}

Solution: a=\dfrac{-19}{3} and b=\dfrac{1}{3} .

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3 years ago
A cell phone weighs about 2.8x 10pounds. Which value of n is most reasonable?
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Answer:0

Step-by-step explanation: took the quiz

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Advocard [28]

Answer:....................

Step-by-step explanation:

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The new school and my parents ordered me for my birthday cost $140.00 They were not happy that they had to pay 5% shipping fee w
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