<span>Quantity Equation: t + s = 20 gallons
Lemon content Eq: 20t+70s = 40*20 gallons
</span><span>Modify for elimination:
2t + 2s = 2*20
2t + 7s = 4*20
</span><span>Subtract and solve for "s":
5s = 2*20
s = 8 gallons (amt. of 70% mix needed)
t = 20-8 = 12 gallons (amt of 20% mix needed)</span>
A. How many angel fish are there?
60 clown fish (4 angel fish / <span>5 clown fish </span>) =48 angel fishes
b. How many goldfish are there?
60 clown fish ( 4 angel fish / <span>5 clown fish ) ( 3 gold fish / 4 angel fish ) = 36 gold fish</span>
Answer:
Commutative property of multiplication
Answer:
d=14.5
r=14.5/2=7.25
area=4πr^2=3.14×7.25×7.25=165.04 inches sq
