The interior angles of a parallelogram will always equal 360. The interior angles of a triangle are 180 if it is a equilateral triangle then the angles are 60 degrees each. You know 2 sides of parallelogram. The 100 degree and 90 degree. You can find the one opposing the x because it’s on a straight line and a straight line is 180 degrees if a triangle is 60 degree angle then the opposing angle to complete the straight line must be 180-60 so you get 120. You now know 3 sides. 120, 90 and 100
They should add up to be 360 so you can set up an equation like so
120+90+100+x=360
And x = 50
Answer:
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Step-by-step explanation:
Answer:
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Step-by-step explanation:
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You will start with representing the area with the given information.
Then distribute the x
Next, subtract 170 from both sides.
A = lw
170 = x (x + 7)
170 = x^2 + 7x
0 = x^2 + 7x - 170 is the quadratic equation in standard form representing the area.