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Scrat [10]
3 years ago
10

Answer plsI have no idea what to do with this.

Mathematics
1 answer:
Nastasia [14]3 years ago
5 0
See attachment file below.

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A jar contains nickels and dimes. There are 20 coins in the jar, and the total value of
weeeeeb [17]

Answer:

Step-by-step explanation:

n and d are the number of nickels and dimes, respectively.

"there are 20 coins"

n+d = 20

d = 20-n

"total value is $1.40"

0.05n + 0.10d = 1.40

0.05n + 0.10(20-n) = 1.40

-0.05n + 2 = 1.40

0.05n = 0.6

n = 12

d = 20-m = 8

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2 years ago
How do you represent an unknown quantity?
Dennis_Churaev [7]

Answer: With a variable. A variable is a letter you use in an equation , like this: 7+x=14, X is a classic one but you can use any letter u please! (In my school at least.)

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3 years ago
What is the y intercept of 60x+55y=660 [with work shown]
adelina 88 [10]

Answer:

(11, 0)

Step-by-step explanation:

to find the y intercept, set y to 0.

60x + 55y = 660

60x + 55 * 0 = 660

60x = 660

60x/60 = 660/60

x = 11

y intercept is (11, 0)

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The length of Bill’s backyard swimming pool is 60 feet longer than the width of the pool. The surface area of the water is 1600
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The width is 20 feet 
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