2. Gerald was given the following problem to solve for the length of the "?". He has made a mistake in his work.

Mathematics

1 answer:

Degger [83]2 years ago

5 0

Answer:

x = 18.7

Step-by-step explanation:

Gerald's answer is almost correct.

He just needs to switch the 14 and the x.

it should be

24/x = 18/14

solve for x by cross multiplication

18x = (24)(14)

18x = 336

x = 18.7

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Simita has 25 coins, consisting of 10c and 5c, which total $2.25. how many of each does she have?

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Answer:

10c = 20

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Step-by-step explanation:

Let x be the number of 10c coins; let y be the number of 5c coins. The total is $2.25, so the amount of 10c and 5c coins will add to that. Simita has 25 coins, so x and y, the number of coins, will have to add to 25. Hence, solve the simultaneous equation.

10x + 5y = 225 (1) - times by 0

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7 0