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Lelu [443]
4 years ago
13

Please help I’ll give 20 points

Mathematics
1 answer:
vovangra [49]4 years ago
7 0

Using the equation P=a+b+c , you just need to plug in.

4a-2b + 7a-3 + 9a - 4

Combine like terms.

20a-2b-7

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Anyone please help and explain !! thanks
Serhud [2]
AP and BQ are medians of the triangle ABC and K is the centroid of the triangle.
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8 0
3 years ago
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
PLEASE HELP ME WITH THIS THANKS
Lady bird [3.3K]

What is M when R = 200? *

Step-by-step explanation:

6 0
3 years ago
The area of triangles and trapezoid
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goldenfox [79]
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