Step-by-step explanation:
Distance = rate × time
If b is the speed of the boat in still water, and c is the speed of the current, then:
60 = (b + c) × 4
35 = (b − c) × 3.5
Simplifying:
15 = b + c
10 = b − c
Add the equations together:
25 = 2b
b = 12.5
Plug into either equation to find c:
c = 2.5
The speed of the boat is 12.5 km/h, and the speed of the current is 2.5 km/h.
Answer:
x=4
Step-by-step explanation:
22 = 18 + x
Subtract 18 from each side
22-18 = 18-18 + x
4 =x
Answer: 39.8
Step-by-step explanation:
I just did it on edge 2021.
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Depending on the value of 't' and 'u', the numerical value of that expression
could have almost anything for factors.
For example, if 't' happens to be 3 and 'u' happens to be 10, then 6tu = 180,
and the factors of 6tu are
1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, and 180.
But that would only be temporary ... only as long as t=3 and u=10.
The only factors you can always count on, that don't depend on the values
of 't' and 'u', are
1, 6, t, u, 6t, 6u, tu, and 6tu .
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