ANSWER
a=53°
b=106°
c=74°
d=37°
EXPLANATION
A semicircle creates a right angle on the circumference.
d+53°=90°
d=90°-53°
d=37°
Angle subtended at the center by an arc is twice the angle subtended at the circumference by the same arc.
c=2d
c=2(37)
c=74°
Adjacent angles on a straight line add up to 180°
c+b=180°
b=180°-c
b=180°-74°
b=106°
The sum of interior angles in an isosceles triangle is 180°
a+a+c=180°
2a+74=180
2a=180-74
2a=106
a=53°
Answer:
78.5 cm^2
Step-by-step explanation:
1, find the radius (half a diameter) R = 5
3.14 * 5^2
3.14 * 25 = 78.5
Answer:
71x+50y
Step-by-step explanation:
Note that if you simply reflected it and dilated it, it would be too far to the left
note that the distances bewteen the axises in image 1 were 1 and 3in image 3,the distances are 2 and 6
seems to be 3 times
so it's the 90 counterclockwise rotation and dilation by scale factor of 3
answer is last one
