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SSSSS [86.1K]
3 years ago
14

A person washers c cars and earns a total of d dollars

Mathematics
1 answer:
Paha777 [63]3 years ago
3 0

Answer:

because of his big work that hes doing and because he earns it

Step-by-step explanation:

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Write a system of equations to describe the situation below, solve using elimination.
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Answer:

The cost of hardbook is $9 and cost of paperback is $5.

Step-by-step explanation:

Let x be the price for hardback book and y be the price for paperback book.

Mr. Yamamoto purchased 42 new hardcover books and 64 new paperback books, which cost a total of $698.

We can write the equation as:

42x + 64y = 698

He also purchased 42 new hardcover books and 58 new paperback books, which cost a total of $668.

We can write the equation as:

42x + 58y = 668

We have to use the elimination method to solve the two equations.

We eliminate x by subtracting the two equations.

42x + 64y-(42x + 58y) = 698 - 668\\\Rightarrow 6y = 30\\\Rightarrow y = 5\\42x + 64(5) = 698\\\\\Rightarrow x = \displaystyle\frac{698 - 64(5)}{42}\\\\\Rightarrow x = 9

Thus, the cost of hardbook is $9 and cost of paperback is $5.

8 0
3 years ago
A bakery sells mocha cupcakes and chocolate cupcakes. One day it sold 161 mocha
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Answer:

35%

Step-by-step explanation:

35% percent of the cupcakes were mocha

8 0
3 years ago
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3 years ago
Could I have help with this?
elixir [45]
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2 years ago
Members of a basketball team suspect the coin used for the coin toss at the beginning of their games is unfair. They believe it
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Answer:

The trial provides enough evidence that the probability of obtaining heads is less than 0.50 and that the coin is unfair.

Step-by-step explanation:

The explanation is in the picture

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