Answer:
160 miles per hour
Step-by-step explanation:
640/4=160
960/6=160
Answer:
feet
Step-by-step explanation:
The total change is the sum of the length of two boards she cut.
First board length is 1 7/8th feet. Let's change to improper fraction:
1 7/8 = 15/8 feet
Second board lengrh is 3.5 feet, or 3 1/2 feet. Let's change to improper fraction:
3 1/2 = 7/2 feet
Let's add the two:

The change in original board is 43/8 feet
Answer:
97.68 %
z(lower) = .0227
z(upper) = .999
Step-by-step explanation: