Let's denote Cindy's age which is unknown with X
We know that Cindy's age is 3 times her age 6 years ago.
6 years ago Cindy's age was the present age (X) - 6 : X-6
The fact that the present age is 3 times her age 6 year ago can be written as:
3*(X-6)
So, finally:
X=3*(X-6)
Answer:
t=2.25
Step-by-step explanation:
9 divided by 4 is 2.25
and 4 x 2.25 is 9
Answer: Difference of 150.72 meters squared
Step-by-step explanation:
Diameter of 13: A~132.665
Diameter of 19: A~283.385
Difference: approximately 150.72
Distribute
8-2t-2=-3t+1
Combine like terms
-2t+6=-3t+1
Add 3t to both sides
t+6=1
Subtract 6 from both sides
t=-5
Final answer: t=-5