Set up two fractions:
8/x and 3/5
Set them equal to each other and cross multiply to get:
8*5 = 3x
40 = 3x
13.3 = x or 13 and 1/3 feet tall.
(2,1)
I first used substitution to get my answer and then used graphing to check. You can easily get a graphing equation by rearranging the second equation.<span />
Answer: $4
The cost of an 8x10 piece is $2, and 16x20 is just 2 times that amount, multiply the cost.
Answer:
6.25
Step-by-step explanation:
she is at 25
she needs to be at 75 which means she needs 50 more feet
at 8 per minute she will reach the depth in 50/8 = 6.25 minutes or 6 minutes and 15 seconds
