Answer:
Step-by-step explanation:
x^3 + 3x^2 - 2x + 3x^2 + 9x - 6
x^3 + 6x^2 + 7x - 6
the solution is A
All right angle triangles have a 90 degree angle. 90+42=132
All triangles have angles that add up to 180 degrees 180-132=48
90+42=132
180-132=48
<span>The missing angle is 48°</span>
The key to solving this problem is drawing a rectangle outside the figure and subtracting the reas of the triangles formed from the are of the rectangle. You can look at the attched image if you want a visual.So first let's find the area of the rectangle, the length is 11 and the width is 5 so the area is 55. Now let's find the area of the trinagles. Triangle 1 has sides of 4 and 3 so the area is 6. Triangle 2 has sides of 5 and 5 so the area is 25/2. Triangle 3 has sides of 2 and 5 so the area is 5. Now let's add the area of the triangles up to get 47/2. Now let's subtract 47/2 from 55 to get the area of the figure which is *drumroll*...63/2. that's all.