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EleoNora [17]
3 years ago
12

Solve the system equation

Mathematics
1 answer:
den301095 [7]3 years ago
4 0
<h2>Answer:</h2>

We will use substitution to solve this system for x.

x - 2y = 27\\y = 5x\\\\x - 2(5x) = 27\\\\x - 10x = 27\\\\-9x = 27\\\\x = -3

Now that we know what x is, we can determine y by pluging in -3 for x in one of the original equations. I will use the first one.

-3 - 2y = 27\\\\-2y = 30\\\\y = -15\\

We now have our solution.

D. (-3, -15)

We can check our answer by pluging the solution into one of the original equations to see if both sides equal each other. I will use the first equation.

-3 - 2(-15) = 27\\\\-3 + 30 = 27\\\\27 = 27

Since the equation checks out, our solution is correct.

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0.02349 in standard form to 3 significant figure is?​
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Answer:

I believe that would be 0.0235. I hope this helps you! :)

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B.
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D.
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3 0
3 years ago
A cylinder has a height of 12 inches and a radius of 1.5 inches. What is its voulme? Round your answer to the nearest tenth. Use
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Find the area of the top, which is a circle.

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In an area of the Midwest, records were kept on the relationship between the rainfall (in inches) and the yield of wheat (bushel
dusya [7]

Answer:

The correct answer is 36.2

Step-by-step explanation:

Hello!

Given the data:

Rainfall(inch) x: 10.5, 8.8, 13.4, 12.5, 18.8, 10.3, 7.0, 15.6, 16.0

Yield (bushels per acre) y: 50.5, 46.2, 58.8, 59.0, 82.4, 49.2, 31.9, 76.0, 78.8

The response variable is

Y: Yield of wheat (bushels per acre)

Explanatory variable:

X: Rainfall in a certain period (inch)

I've calculated the equation of regression using a statistics software, the estimated equation is:

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To calculate the value that will take the response variable for a given value of X:

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I hope it helps!

5 0
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pogonyaev

Answer:

by adding the circle of area below the doorknob and removing the surface area of the knob itself

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