Answer:
4÷1/5×4=80
divide 4 and 1/5 and you will get 20 then multiple by 4 and you will get 80
Given : 7y=8x-14 and y =6
We plug in 6 for y in the given equation
Statement Reason
7y=8x-14, y=6 Given
7(6)= 8x-14 Substitution
56 = 8x Add 14 on both sides
7 = x divide by 8 on both sides
Hence proved x=7
2 pieces at 2 3/4 feet is 2 x 2 foot 9 inches = 5 foot 6 inches
1 piece that is 3.5 feet is 3 feet 6 inches
2 pieces that are 1 5/8 feet are 2 x 1 foot 7 1/2 inches = 3 feet 3 inches
I think there should be more to the question. If you are looking for the best combination to buy it would be two 7 foot boards
a) (0.17 ac)×(126 min/ac) = 21.42 min
b) I can mow 1/126 ac/min; you can mow 1/117 ac/min. Together, we can mow at a rate that is the sum of these:
... (1/126 + 1/117) ac/min = (117 + 126)/(126×117) = 243/14,742 ac/min
Then it will take 14,742/243 min/ac × 0.17 ac/lawn ≈ 10.31 min/lawn
Answer:
Step-by-step explanation:
