3 years ago

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.

Sedbober [7]

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.

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3 years ago

A bakery sells mocha cupcakes and chocolate cupcakes. One day it sold 161 mocha

anzhelika [568]

Answer:

35%

Step-by-step explanation:

35% percent of the cupcakes were mocha

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3 years ago

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liam is setting up folding chairs for a meeting. if he arranges the chairs in 9 rows of the same length, he has 3 chairs left ov

svlad2 [7]

Hello, Here is a link to the answer. I am posting this link because it is a Brainly link and a verified answer brainly.com/question/219158

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3 years ago

Could I have help with this?

elixir [45]

I cannot see the picture

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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

Nadusha1986 [10]

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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3 years ago