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zaharov [31]
3 years ago
12

Anyone know how to solve this?? Number 5!!

Mathematics
1 answer:
iragen [17]3 years ago
8 0
P=6+1+2
6+1+2=9 x 3= 27
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Allison measured a line to be 5.4 inches long. If the actual length of the line is 5.5 inches, then what was the percent error o
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Answer:

1.85%

Step-by-step explanation:

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<em><u>Solution:</u></em>

Let "d" be the number of dimes

Let "q" be the number of quarters

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value of 1 quarter = $ 0.25

Given that LIzzie has 30 coins

number of dimes + number of quarters = 30

d + q = 30 ---- eqn 1

Also given that the coins total $ 4.80

number of dimes x  value of 1 dime + number of quarters x  value of 1 quarter = 4.80

d \times 0.10 + q \times 0.25 = 4.80

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Let us solve eqn 1 and eqn 2

From eqn 1,

d = 30 - q ---- eqn 3

Substitute eqn 3 in eqn 2

0.1(30 - q) + 0.25q = 4.8

3 - 0.1q + 0.25q = 4.8

0.15q = 1.8

<h3>q = 12</h3>

From eqn 3,

d = 30 - 12

<h3>d = 18</h3>

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