Answer:
see below
Step-by-step explanation:
butterfly = x minutes
breast = y minutes
total is 50 minutes
breast stroke = butterfly +20
Part A
x+y = 50
y = x+20
Part B
Substitute the second equation into the first
x+ (x+20) = 50
2x+20 = 50
2x+20-20 = 50-20
2x = 30
2x/2 = 30/2
x = 15
y = x+20
y = 20+15
y = 35 minutes
35 minutes on the breast stroke
Part C
45 minutes on the butterfly is not reasonable
We only have a total of 50 minutes
50-45 = 5
But he spend more time on the breast stroke ( 20 minutes more), but if he spend 45 minutes on the butterfly, he would have to spend less on the breast stroke.
12.(367346938775510204081632653061224489795918) = 12 remainder 18
Answer:
D
Step-by-step explanation:
The two scores are the same exact same, so of course the IQRs are the same to.
Answer:
11,184,808
Step-by-step explanation:
The n-th term of a geometric series is ...
an = a1·r^(n-1)
To fill in the formula, we need a1·r^n, so need to multiply the last term shown by r.
The value of r is 32/8 = 4, and the other terms of interest are a1 = 8, a1·r^(n-1) = 8388608. So, the sum is ...
