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Ymorist [56]
4 years ago
9

What is the sum of (2x - 4y) and (9x + 2y)? Please explain

Mathematics
1 answer:
navik [9.2K]4 years ago
7 0

Answer:

11x-2y

Step-by-step explanation:

Combine like terms so 2x+9x=11x AND -4y+2y=-2y so answer follows as 11x-2y

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Solve the system of equations for the variables: x+2y-z=3 x+y-2z= -1
8_murik_8 [283]

Answer:

z=0

x= -5

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Step-by-step explanation:

Check the attachment please

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3 years ago
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I do not understand it answer with explanation too please​
kykrilka [37]

Answer: x = 10

Step-by-step explanation:

The sum of all interior angles in a polygon add up to 360°

Meaning to find X we grab those numbers/variables and make them equal to 360°. This will give us an equation.

106 + 94 + 135 + x + ( x + 5 ) = 360

335 + x + x + 5 = 360

340 + 2x = 360

subtract 340 from both sides

2x = 20

Divide by 2

x = 10

Now solve the angle equations to find their angle.

( 10 + 5 ) = 15

x = 10

Now to check if it's right add them together

106 + 94 + 15 + 10 + 135 = 360 ( ITS CORRECT )

7 0
3 years ago
What does JK stand for when doing angles??? Offering 29 pts and brainliest answer
MaRussiya [10]
Hello.

JK (or any other combination of letters) doesn't stand for anything in geometry. The purpose of these letters is to reference certain angles and sides of a figure without having to describe the angles/sides in relation to other angles/sides to know exactly which angle or side is being referenced.

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Answer:

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Step-by-step explanation:

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