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xenn [34]
3 years ago
5

Solve each system by elemination, 4x+8y=20 and -4x+2y=-30

Mathematics
1 answer:
ludmilkaskok [199]3 years ago
5 0
The sum of the left side of these two equations is equal to the same of the right side is these two equations
4x+8y + (-4x+2y) = 20 + 30
10y =50 ( x is eliminated)
y=5
Take this into the second equation
-4x +2y = 30
-4x + 2*5 = 30
x=-5

So x=-5
y=5
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3 years ago
Complete the following statements.
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Answer to number 1. —- 44 cups.

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8 0
3 years ago
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8 0
3 years ago
Read 2 more answers
the length of an arc of a circle is 269⁢πcentimeters and the measure of the corresponding central angle is 65∘. what is the leng
scZoUnD [109]

The length of the circle's radius = 744.92 cm

Given the length of arc of a circle, arc length = 269⁢π cm

Central angle of a circle is the angle made between the radius through the arc length at the center of the circle.

The corresponding central angle = 65°

To find the corresponding central angle in radians = 65° x π/180 = 13π/36 radians

We have, arc length of a circle = radius x central angle

Therefore, radius of the circle = arc length / central angle

                                                  =  269⁢π /(13π/36)

                                                  = 744.92 cm

Learn more about arc length of a circle at brainly.com/question/28108430

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6 0
2 years ago
What expression that can be used to check the quotient of 646÷3
kirza4 [7]

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3 years ago
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