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nasty-shy [4]
4 years ago
7

3x+10y=13 4(-2y+x)-9x=13

Mathematics
1 answer:
Alekssandra [29.7K]4 years ago
7 0

For the first one your answer would be

The problem would stay the same because you can't combine like terms.

For the second one your answer would be

-8y-5x=13

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Marco leaves the bathroom faucet running for 22 minutes while he gets ready in the morning. running the faucet for 5 minutes was
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The amount of energy waste, in terms of hours which a 60-watt light bulb would remain on, is 61.6 hours then the correct option is B.

<h3>What are ratio and proportion?</h3>

A ratio is an ordered couple of numbers a and b, written as a/b where b can not equal 0. A proportion is an equation in which two ratios are set equal to each other.

Marco leaves the bathroom faucet running for 22 minutes while he gets ready in the morning.

Running the faucet for 5 minutes wastes the same amount of energy as leaving a 60-watt light bulb on for 14 hours.

Then we have

\begin{aligned} \dfrac{5\ minutes}{14 \ hours } &=\dfrac{1\ minute }{x \ hours}\\\\x &= 2.8  \ hours \end{aligned}

So, the rate is 2.8 hours per minute.

Since macro leaves the bathroom faucet running for 22 minutes. Then the waste of energy is leaving a 60-watt light bulb will be

→22 minutes × 2.8 hours/minute = 61.6 hours.

More about the ratio and the proportion link is given below.

brainly.com/question/14335762

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2 years ago
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skelet666 [1.2K]

Answer:

(1)C- Trapezoid

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Step-by-step explanation:

<u>Question 1</u>

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<u>Question 2</u>

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3 0
4 years ago
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Answer:

Your answer is b+2=8. Good day.

Step-by-step explanation:

6 0
3 years ago
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Answer:

Step-by-step explanation:

From given information

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Ha : p > 0.4

Correct order is

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3 years ago
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