Answer:
12
Step-by-step explanation:
The general formula for this is
Formula
1/t1 + 1/t2 = 1/t_tot
givens
t1 = 6 hours
t2 = x
t_tot = 4 hours
Solution
1/6 + 1/x = 1/4 Subtract 1/6 from both sides.
1/6-1/6 + 1/x = 1/4 - 1/6 Change to 12 as your common denominator
1/x = 3/12 - 2/12 subtract
1/x = 1/12 Cross multiply
x = 12
Tom would need 12 hours to do the job alone.
Answer:
It is 12.9, 13.1, 13.2 C.
Step-by-step explanation:
The events are mutually exclusive, because your primary method can't be both a driving a car or taking a bus.
Since they are exclusive, the probability of the "or" clause is the sum of the probabilities:
Since a person primarily takes a bus with probability 0.32, the opposite happens with probability
answer y = -222 when x = 74
Step-by-step explanation:
84 / -252 = 74 / y
84y = (-252)(74)
84y = -18,648
y = -18,648 / 84
y = - 222
answer y = -222 when x = 74
Answer:
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