Answer:
8
Step-by-step explanation:
Fill in the variable value and do the arithmetic.
___
Of course, the fraction can be simplified first:
725 is equal to (number of rows)*(number of seats per row)
r = s-4
725 = (s-4)s
s^2-4s-725 = 0
Factoring: (s-29)(s+25) = 0
Thus there are 29 seats per row, and 25 rows.
Answer:
Step-by-step explanation:
slope, m = 0.1m/4m = 0.025
Theoretical effort (ignoring friction) = 9000N * 0.025 = 225 N
actual effort = 300 N
efficiency
= potential energy out / actual energy in
= 225 N / 300 N = 0.75
The total is equal to 57+24+41 = 122
Tea's probability 57/122=.47or 47%
Coffee's probability is 41/122 = .34 or 34%
Hopes this helps.
