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2 years ago

Byron has 72 coins in his piggy bank. The piggy bank contains only dimes

Mathematics

2 answers:

sertanlavr [38]2 years ago

4 0

Answer:

(3) $0.25q+0.10(72-q)=14.70$

Step-by-step explanation:

Let d represent number of dimes and q represent number of quarters.

We have been given that Byron has 72 coins in his piggy bank. We can represent this information in an equation as:

$q+d=72...(1)$

We are also told that the value of all coins is $14.70.

Value of d dimes: $0.10d$ .

Value of q quarters: $0.25q$ .

$0.25q+0.10d=14.70...(2)$

From equation (1), we will get:

$d=72-q$

Substitute this value in equation (2):

$0.25q+0.10(72-q)=14.70$

Therefore, the equation $0.25q+0.10(72-q)=14.70$ can be used to determine q, the number of quarters.

Mashutka [201]2 years ago

3 0

3. 25 cents per quarter, and then the reamaining amount ids dimes, which are 10 cents apeice.

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Step-by-step explanation:

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Solve question 10 using substitution or elimination. Show all work.

BlackZzzverrR [31]

Solid paper costs 1.75 each
Printed paper costs 2.50 each

Given:
Ben = $43.50 (12 rolls solid paper and 9 rolls of
printed paper)
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Find X:
8x + 15y = 51.50
8x = 51.50 - 15y
x= (51.50 - 15y)8

Substitute X:
12x + 9y = 43.50
12(51.50 - 15y)/8 + 9y = 43.50
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Hope that helps! Have a good day :)

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