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Fittoniya [83]
3 years ago
13

I need help working this out

Mathematics
2 answers:
Leona [35]3 years ago
8 0

I think in this situation the best method would be a guess and check. You know that there are 8 dimes more than there are nickels. So just keep increasing each number by one until you reach $1.40. If there were 9 dimes and 1 nickels it would add up to $0.95. If there were 10 dimes and 2 nickels, it would add up to $1.10. If there were 11 dimes and 3 nickels, it would add up to $1.25. If there were 12 dimes and 4 nickels, it would add up to $1.40. So your answer is 12 dimes and 4 nickels.

I hope this helped!

Vadim26 [7]3 years ago
7 0

d = n + 8

10d + 5n = 140

Solve this equations: d = 12 ∧ n = 4

A tool like photomath can solve this step by step for you.

12 Dimes and 4 Nickels.

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In ΔSTU, u = 23 inches, ∠T=158° and ∠U=17°. Find the length of t, to the nearest 10th of an inch.
Evgesh-ka [11]

Answer: t = 29.5 inches

Step-by-step explanation:

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t = sin158 × 23/sin17

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