Answer:
5.25 miles
Step-by-step explanation:
Convert 3/4 to a decimal=
0.75
Then, multiply 0.75 with 7
0.75×7=5.25
David ran 5.25 miles in 7 days
Answer:
V = D/t = 10 / 20 = 0.5 mile per min
V = D/t = 20/30 = (2/3) mile per min
V = D/t = (10+20)/ 50 = (3/5) mile per min
Answer:
feet
Step-by-step explanation:
Total length of the board = 
feet
Length of board that is removed from the larger board = 
When a smaller board is removed, the length of the remaining board can be calculated using subtraction as:
Remaining Length of board = Total Length - Length of smaller board
= 
This means feet of board remains after removing the smaller board from it.
4x + 3y = 26
x = 3/2y + 2
solving for y:
4 (3/2y + 2) + 3y = 26
6y + 8 + 3y = 26
9y + 8 =26
9y = 18
y = 2
solving for x:
x = 3/2(2) + 2
x = 3 + 2
x = 5
done.
**optional: use second equation to check
