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1 year ago

15

A collection of quarters and nickels contains at least 42 coins and is worth at most $8.00. If the collection contains 25 quarte

rs, how many nickels can be in the collection? Let x = the number of quarters. Let y = the number of nickels. There are at least nickels, but no more than nickels.

2 answers:

Elenna [48]1 year ago

9 0

Answer:

17

35

Step-by-step explanation:

KIM [24]1 year ago

5 0

Answer:

17

35

Step-by-step explanation:

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The weight, w, of a spring in pounds is given by 0.9 times the square root of the energy, E, stored by the spring in joules. If

frutty [35]

For this case we have the following equation:
$w = 0.9* \sqrt{E}$
Where,
w: The weight of a spring in pounds
E: the energy stored by the spring in joules.
Substituting values we have:
$w = 0.9* \sqrt{12}$
Making the corresponding calculation:
$w=3.12$
Answer:
the approximate weight of the spring in pounds is:
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evablogger [386]

Let's call the number x. Now, let's make an equation to help us solve this problem.

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lorasvet [3.4K]

Answer:

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Step-by-step explanation:

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likoan [24]

Answer:

Step-by-step explanation:

a) = 46.2 X 10∧-1

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b) = 5.7 x 10∧-6

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