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Vesnalui [34]
3 years ago
5

The hardcover version of a book weighs twice as much as its paperback version. The hardcover book and the paperback together wei

gh 4.2 pounds. Which system of equations can be used to find h, the weight of the hardcover book, and p, the weight of the paperback?
h = p − 4.2
h = 2p
h = 4.2 − p
p = 2h
h = p − 4.2
p = 2h
h = 4.2 − p
h = 2p
Mathematics
2 answers:
olganol [36]3 years ago
5 0

Answer:

the correct option id D.

h = 4.2 − p

h = 2p

HACTEHA [7]3 years ago
3 0

Answer:

The 4th system (h = 4.2 − p ; h = 2p)

Step-by-step explanation:

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Step-by-step explanation:

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3 years ago
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kaheart [24]

Hello from MrBillDoesMath!

Answer:   b = 4, h = 13

Discussion:

For a triangle with base b" and height "h, the area formula is

A=  (1/2)bh.

In our case A = 26, h = 5b-7, so

26 = (1/2) b (5b-7).  Multiply both sides by 2:

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so b = 4 and h = 5b -7 = 5*4 - 7 = 13


Thank you,

MrB


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