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ivolga24 [154]
2 years ago
10

I don’t understand this, can somebody help?

Mathematics
1 answer:
Klio2033 [76]2 years ago
8 0
<h2>29)</h2><h2>quarters = 13 \\ dimes = 25 \\ nickles = 18 \\ pennies = 30 \\ total \: coins = 86</h2>

not \: penny \: or \: dime = quarter \: or \: nickle

p(x) =  \frac{13 + 18}{86}  =  \frac{31}{86}  = 0.36

<h2>30)</h2>

gallons \: for \: car \: 1 =  \frac{450}{18}  = 25 \: gal

gallons \: for \: car \: 2 =  \frac{450}{25}  = 18 \: gal

we \: need \: 25 + 18 = 43 \: gallons

43 \times 2.49 = 107.07 \: dollars

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A

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The call lasted 13 minutes

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