C and D is true and others are false
Answer:
320+40=360
Step-by-step explanation:
8(40+5)
320+40=360
Answer: $498.08
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Answer:
This is not a right triangle because 7^2 + 17^2 does not equal 20^2
Step-by-step explanation:
The given angles are complementary, therefore:
(5r + 5) + (8r -6) = 90°
13r - 1 = 90
13r - 1 + 1 = 90 + 1
13r = 91
13r/13 = 91/13
r = 7
