Hi there!
∠C = 40° and triangle ABC is isosceles, therefore:
∠C = ∠A = 40°
Angles in a triangle sum up to 180°, so:
180 = 40 + 40 + ∠A
180 = 80 + ∠A
100 = ∠A
Thus, arc CB has a measure of 100°.
B. 20x and .8x because they have the same variable
1. 19
2. 14
3. 9
4. 10 rounded didn’t know if you wanted decimals
5. 4
The mean is 30.4 the median is 28.5 the mode is 30 and the range is 50
Answer: The width is the square root of 40 or 6.32
Step-by-step explanation:
9^2 + b^2 = 11^2 where b squared is the width
81 + b^2 = 121
-81 -81
b^2 = 40
b= 6.32
