Use proportion, so multiply 100 by 75, then divide it by 30 and that's your answer.....250
3/10 is the answer to 4/5-1/2
Answer:
X is 50
Step-by-step explanation:
check the picture below.
if ∡F = 90° and ∡D = 30°, then the ∡A = 60°, meaning the triangle is a 30-60-90 triangle and therefore we can use the 30-60-90 rule as you see in the picture.
I think that it might be 80 seconds (1 min 20 sec)