Christy began running 50 seconds before Stephanie
Christy ran at a rate of 7 feet per second.
Stephanie ran at a rate of 10 feet per second.
How many seconds had Christy been running at the time when the two girls had run exactly the same distance ?

Perform the indicated operation. 8/a - 6/a + 7/a

At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.

Asunflower was 20 1/2 inches tall. over the next 6 months, it grew to a height of 37 inches tall. what was the average yearly growth rate of the height of the sunflower? ? plz write a proportion to solve i will give you 100 points