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tangare [24]
3 years ago
7

Solve systems of equations for x + y, please!! -2x - 7y = -13 3x + 6y = 15

Mathematics
1 answer:
Andrei [34K]3 years ago
6 0

Answer:

y=-4

Step-by-step explanation:

i just did it

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Solve with a system of equations: Two angles are supplementary if the sum of their measures are 180 degrees. If one is 90 degree
julsineya [31]

Answer:

  The measures of the angles are 150° and 30°.

Step-by-step explanation:

Let x and y represent the measures of the angles, with x representing the larger angle.

  x + y = 180 . . . . . . the two angles are supplementary

  x = 90 + 2y . . . . . one is 90° more than twice the other

___

Substituting the expression given by the second equation into the first, we have ...

  (90 +2y) +y = 180

  3y = 90 . . . . . . . . . . collect terms, subtract 90

  y = 30 . . . . . . . . . . . divide by the coefficient of y

  x = 180 -y = 150

The measures of the angles are 150° and 30°.

6 0
3 years ago
What is 2/3÷-3/5 as an improper fraction
rodikova [14]

Answer: -10/9

Step-by-step explanation: is this what you were looking for

8 0
3 years ago
The coordinates of the vertices of quadrilateral JKLM are J(-3,2), K(4,-1), L(2,-5) and M(-5,-2).
pashok25 [27]
<span>Slope of JK=((-1)-2)/(4-(-3)=-3/7 Slope of KL=((-5)-(-1)/(2-4=2 Slope of LM=((-2)-(-5))/(-5-2)=-3/7 Slope of MJ=(2-(-2))/((-3)-(-5))= 2 JK is parallel to LM and KL is parallel to MJ. Therefore JKLM is a parallelogram.</span>
5 0
3 years ago
10+10= hhihihhhiihihihih
svetoff [14.1K]

Answer:

10+10=1010

Step-by-step explanation:

brainliest?

4 0
2 years ago
Read 2 more answers
Katrina saved $200 to purchase your tablet her father spent ten times as much money to buy his new computer how much did her fat
RideAnS [48]
I believe it would be $2,000. $200 x 10 
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3 years ago
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