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Ludmilka [50]
3 years ago
9

Abdul ordered some books online and spent a total of $133. Each book cost $8 and he paid a total of $5 for shipping. How many bo

oks did he buy?
Mathematics
2 answers:
Vsevolod [243]3 years ago
8 0

Answer:

8x+5=133

8x=128

x=16

Step-by-step explanation:

16 books

Ivahew [28]3 years ago
6 0

Answer:

He bought 16 books

Step-by-step explanation:

cost = flat fee + books * cost per book

133 = 5 +b*8 where b is the number of books

133 = 5+8b

Subtract 5 from each side

128 = 8b

Divide each side by 8

128/8 = 8b/8

16 = b

He bought 16 books

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Hello,

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Write the equation of the line passing through the points (-4,-1) and (2,8)
klio [65]
<h3><u>Explanation</u><u>:</u></h3>
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m =  \frac{y_2 - y_1}{x_2 - x_1}

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m =  \frac{8 - ( - 1)}{2 - ( - 4)}  \\ m =  \frac{8 + 1}{2 + 4}  \Longrightarrow \frac{9}{6}  \Longrightarrow \frac{3}{2}  \\ m =  \frac{3}{2}

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y =  \frac{3}{2} x + b

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(x_, y) = ( - 4,  - 1)

- 1 =  \frac{3}{2} ( - 4) + b

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- 1 =  \frac{3}{ \cancel{2}} ( \cancel{ - 4})   + b\\  - 1 = 3( - 2) + b \\  - 1 =  - 6 + b \\  - 1 + 6 = b \\ 5 = b

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y =  \frac{3}{2} x + 5

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\large \boxed{y =  \frac{3}{2} x + 5}

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