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Anastasy [175]
3 years ago
8

A: 10x-4y=20

Mathematics
1 answer:
KATRIN_1 [288]3 years ago
8 0


First, use the multiplication property of equality. Multiply the top equation by 3 and the bottom equation by 2.

30x - 12y = 60
16x + 12y = 28

Now, use the addition property of equality. Add the the two equations.

46x = 88  Use the division property of equality. Divide both sides by 46.

x is about 1.91

If you sub that back in for x, you can solve and find the y is about -0.217.

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For this case, the first thing we must do is define variables.

We have then:

n: number of cans that each student must bring

We know that:

The teacher will bring 5 cans

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At least 105 cans must be brought, but no more than 205 cans

Therefore the inequation of the problem is given by:

Answer:

105 <u><</u> 20n + 5 <u><</u> 205

the possible numbers n of cans that each student should bring in is:

105 <u><</u> 20n + 5 <u><</u> 205

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What is the exact area of a circle whose radius is 9 yd? Enter your answer in the box. Express your answer in terms of
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Answer:

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3 years ago
Read 2 more answers
Solve for y <br> 5y-x=10<br><br> Is it 2?
svet-max [94.6K]
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Isolate the variable
add x to both sides
5y-x+x=10+x
5y=10+x
Divide both sides by 5
5y/5=10+x/5
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Sal is tilling his entryway floor plan is drawn in the unit rate each unit grid each unit length represent one food tile cost 1.
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Answer:

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7 0
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Sample Distribution: The sample is a subset of the population, and is the set of values you actually use in your estimation. Let’s think 1000 individual you have selected for your study to know about average height of the residents of India. This sample has some quantity computed from values e.g. mean (x ), Standard deviation (s) , sample proportion etc. This is called sample distribution. The mean and standard deviation are symbolized by Roman characters as they are sample statistics.

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3 years ago
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