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3 years ago

Use elimination to solve the system below: 4x – 3y = 22 2x – y = 10

Mathematics

1 answer:

Monica [59]3 years ago

3 0

Answer:

Y = -2, X = 4

Step-by-step explanation:

When you first use the elimination method, you would multiply 2x-y = 10 by -2 so that you could get the 4x to be eliminated.

4x-3y = 22

(2x-y = 10)-2 = -4x + 2y = -20

When you add those 2 together you are left with -y = 2, which you divide by negative to get y = -2. Then you substitute -2 for y to solve for x. I substituted the bottom equation

2x - (-2) = 10

2x +2 = 10

2x = 8

Divide both sides by 2 to get x = 4.

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kupik [55]

Answer:

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3 years ago

2. What is the sample proportion of heads in your sample of 40? Report this value to your teacher.

Alexeev081 [22]

Answer:

$\frac{18}{40}=0.45$

Though it may vary, it's going closer to 0.5 as long as we enlarge our sample.

Step-by-step explanation:

1) Since a coin has heads and tails, then a sample proportion of 40 we can simulate it using some applets.

2) Here are the most common outcomes, as long as we continue on flipping coins.

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3 years ago

Divide the product of 6 and 5 by the quotient of 12 and 4<br> please show me the expression too...

ArbitrLikvidat [17]

Step-by-step explanation:

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3 years ago

Read 2 more answers

I NEED HELP ASAP! In a magic square, the sum of the numbers in each row, column, and diagonal is the same. Write and solve equat

Trava [24]

Answer:

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Step-by-step explanation:

When choosing equations to write, make sure you choose a pair that allow you to isolate a variable and solve for it.

Sample solution:

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2 years ago

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s344n2d4d5 [400]

Answer:

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Step-by-step explanation:

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2 years ago