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VladimirAG [237]
3 years ago
12

You buy 8 books for $44. Paperbacks are $4 and hardbacks are $8. How many of each type can you buy?

Mathematics
2 answers:
Alika [10]3 years ago
6 0
She purchased 5 paperbacks at $4 and 3 hardbacks at $8 for a total of $44.

h = number of hardback books
p = number of paperback books
h + p = 8
so
h = 8-p
.
4*p = price of paperbacks
8*h = price of hardbacks
4*p + 8*h = 44
.
substitute h = 8-p
.
4p + 8(8-p) = 44
4p +64 -8p = 44
-4p = -20
p = 5
h = 8-p
h = 3
.
check to be sure the values are right
4*5 = 20
3*8 = 24
20 +24 = 44
Aleksandr-060686 [28]3 years ago
3 0

Answer:

She purchased 5 paperbacks at $4 and 3 hardbacks at $8 for a total of $44.

Step-by-step explanation:

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3/8 x 4/9
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Simplify the expression: –3(–7 + 3z)
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Hey there! I'm happy to help!

We want to multiply each term inside the parentheses by the number on the outside.

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3 years ago
9+3.5g=11-0.5g brainliest to whoever gives steps
kow [346]

Answer:

The answer is <u>g = 0.5</u>

Step-by-step explanation:

1. Your equation is :

<em>9+3.5g=11-0.5g</em>

2. First, multiply both sides by ten

<em>9 * 10 + 3.5 * 10 = 11 * 10 - 0.5 * 10</em>

3. Next we refine the equation

<em>90 + 35g = 110 - 5g</em>

4. Now, lets subtract 90 from both sides

<em>90 + 35g - 90 = 110 - 5g - 90</em>

5. Simplify

<em>35g + 5g = -5g + 20 + 5g</em>

6. We then add 5g to both sides

<em>35g + 5g = -5g + 20 + 5g</em>

7. Simplify again

<em>40g = 20</em>

8. Now, divide both sides by 40

<em>40g/40 = 20/40</em>

9. And finally, simplify once again to get your final answer.

<em>g = 1/2 or 0.5</em>

I hope this helped :)

7 0
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Answer:

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Step-by-step explanation:

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