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2 years ago

Solve for p. 3(p + 4) = 48 A. 13 B. 12 C. 14 D. 19

Mathematics

1 answer:

Andru [333]2 years ago

6 0

Step-by-step explanation:

3 ( p + 4 ) = 48

3p + 12 = 48

3p = 48 - 12

3p = 36

p = 36 ÷ 3

p = 12...

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Step-by-step explanation:

Let

x ----> the number of nickel's coin

y ---> the number of dime's coin

z ---> the number of quarter's coin

Remember that

$1\ nickel=\$0.05$

$1\ dime=\$0.10$

$1\ quarter=\$0.25$

we know that

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substitute equation C in equation A and equation B

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Solve the system of equations A1 and B1 by graphing

Remember that the solution is the intersection point both graphs

The solution is the point (75,35)

see the attached figure

z=75, y=35

<em>Find the value of x</em>

$x=2(75)=150$

therefore

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The number of dime's coin is 35

The number of quarter's coin is 75

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