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Dima020 [189]
3 years ago
12

If 100 pencils can be sold for $90, then how many pencils are needed to earn $8500?

Mathematics
1 answer:
ira [324]3 years ago
5 0

Step-by-step explanation:

You can set up a proportion.

Let x be the number of pencils needed.

\frac{100}{90} = \frac{x}{8500}

Solve for x.

x = 9444.44 pencils (round it up to 9445 pencils if you need a whole number)

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3 years ago
A radio station plays a total of 272 pop, rock, and hip-hop songs during a day. The number of pop songs is 3 times the number of
Norma-Jean [14]
Let the daily played number of pop songs be P, the number of rock songs be R and the number of hip-hop songs be H.

i) 
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means that : P+R+H=272

ii) 
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so, P=3R

iii)
"The number of hip-hop songs is 32 more than the number of rock songs."

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iv)

since both P and H can be written in terms of R, we have:

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vi) 

thus: P=3R=3*48=144,    H=32+R= 32+48=80

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48 Rock, 144 Pop and 80 Hip-hop

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3 years ago
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I'm pretty sure it is d, 5/22

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A pentagon has an 80° angle and 100° angle. The remaining three angels have a ratio of 2:3:4. The measure of the largest angle,
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The dimensions of a building are
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