Both triangles that are given (with right angles) lie in plane m, proving that AC is perpendicular to plane m. As angle acd is from a triangle that shares the common perpendicular, it too is a right angle
Answer:
5
Step-by-step explanation:

Answer:
one fraction 17/5
mixed number: 3 2/5
Step-by-step explanation:
Answer:
510
Step-by-step explanation:
divide into chunks. I divided it like how you would draw the equal sign.
for top chunk, 20*8=160
for 2nd chunk, 8*25=200
for the last chunk, 15*10=150
add up 160, 200, and 150
Answer. 655.4
Step-by-step explanation:
what did u get?