Answer:
327 children and 318 adults
Step-by-step explanation:
The x be the amount of children and y be the amount of adults that were at the swimming pool. We can use this to set up a system of equations:
x+y=645
1.75x+2.50y=1367.25
Move y to the other side in the first equation to isolate x and solve the system using substitution:
x=645-y
1.75(645-y)+2.50y=1367.25
Distribute
1128.75-1.75y+2.50y=1367.25
1128.75+0.75y=1367.25
Subtract 1128.75 from both sides
0.75y=238.5
Divide both sides by 0.75
y=318
x=645-y
x=645-318
x=327
327 children and 318 adults swam at the pool that day
Answer:
π^2, 9.8 repeating, square root of 99.
Step-by-step explanation:
Answer:
25× 1/10 = 5/2
Step-by-step explanation:
5/2 or 2.5 lies between 2 and 3
Answer: 700,000 + 20,000 + 80 = 720,080
Step-by-step explanation:
