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baherus [9]
3 years ago
8

Jessie has some nickels, dimes, and quarters in her bank. The number of coins is 30. The expression 0.05n + 0.10d + 0.25q repres

ents the value of the coins, which is $3.45. Jessie has five more nickels than she does quarters. How many of each coin does Jessie have?
Mathematics
1 answer:
goldfiish [28.3K]3 years ago
8 0

Answer:

n = 12 nickels

d = 11 dimes

q = 7 quarters

Step-by-step explanation:

.05n + .1d + .25q = 3.45

n + d + q = 30

n = q + 5

n = 12

d = 11

q = 7

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Corn costs 99 cents per pound, and beans cost 45 cents per pound. If Shea buys 24 total pounds of corn and beans, and it costs $
viva [34]
Shea bought 13.5 pounds of corn

c = pounds of corn
b = pounds of beans

Here’s what we know:
c(0.99) + b(0.45) = 18.09
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Substitute that expression for c in our first equation to get a numerical solution for b:

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4 0
3 years ago
Joe gets paid $40 per hour. how much would he earn if he worked for 45 minutes
anzhelika [568]
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where we take the positive root because we're told that the determinant is positive.
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