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erma4kov [3.2K]
3 years ago
8

Please help a sister we are struggling!!!

Mathematics
1 answer:
disa [49]3 years ago
6 0

Answer:

i just need the points

Step-by-step explanation:

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605 pounds is 840.25 dollars

405 dollars is 313.30 pounds

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Answer:

Jenna had 25 quarters and 15 dimes.

Step-by-step explanation:

Let Q = the number of quarters and D = the number of dimes.

Then:

1) Q+D = 40 "One week she had 40 coins, all of them dimes and quarters...."

2) 0.25Q+0.1D = $7.75 "...she had a total of $7.75."

Rewrite equation 1) as: D = 40-Q and substitute into equation 2).

2a) 0.25Q+0.1(40-Q) = 7.75 Simplify the left side.

 

2b) 0.25Q+4-0.1Q = $7.75 Subtract 4 from both sides.

2c) 0.25Q-0.1Q = 3.75 Combine the like-terms on the left side.

2d) 0.15Q = 7.75 Divide both sides by 0.15

2e) Q = 25 and:

D = 40-Q

D = 40-25

D = 15

Jenna had 25 quarters and 15 dimes.

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3 years ago
A student is taking two courses, history and math. the probability the student will pass the history course is 0.59, and the pro
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Probability of passing history course = 0.59

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Hello!

Change each mixed number to an improper fraction to make it easier

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Answer ⇒ 13 21/32

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