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creativ13 [48]
3 years ago
12

Josh paid for four books with 3 20$ bills He received 16 $ in change Each book cost the same amount how much did each book cost

Mathematics
2 answers:
azamat3 years ago
8 0

Answer:

each book cost $11

Radda [10]3 years ago
4 0
Answer: Each book costs $11

Explanation: If Josh paid for 3, 20 bills he would be paying $60, and if he got $16 in exchange you could subtract that from the amount he gave (60-16 = 44) then you would get how much all the books costs TOGETHER. But what you need to find is how much each book costs, you know they all cost the same and how much books he bought (4) so you just divide 44 by 4 which would get you 11.

(Hope this helps!)
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3 years ago
Kaitlyn solved the equation for x using the following calculations. Negative 5. 4 x = 12. 2. Minus 5. 4. X = 6. 8. What error, i
Sladkaya [172]

The value of x is 17.6. She should have added 5.4 on both sides to get the correct value of x. Then the correct option is A.

<h3>What is the linear system?</h3>

A Linear system is a system in which the degree of the variable in the equation is one. It may contain one, two, or more than two variables.

Kaitlyn solved the equation for x using the following calculations.

\rm -5.4 + x =12.2

and she did the calculation will be

\rm -5.4x = 6.8

The mistake she did in this equation is the plus sign is removed between the -5.4 and x. And she subtracted 5.4 from 12.2.

The correct solution of the equation is to add both sides 5.4. Then we have

\begin{aligned} \rm -5.4 + x+5.4 &=12.2+5.4\\\\\rm x &= 17.6\end{aligned}

More about the linear system link is given below.

brainly.com/question/20379472

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