Answer:
19/40
Step-by-step explanation:
1.9*(1/4) =0.475
0.475=19/40
Answer: 3x 3
+7x 2
+40x+4
Step-by-step explanation: Hope that helps
Answer:
A = 3.14
Step-by-step explanation:
A = π
A = 3.14 x 
(diameter = 2)
(remember, radius is half of the diameter)
(radius = 1)
A = 3.14
I don't know if it could be the area of a square but x has to be 8.34. (ROUNDED)
Let V, be the rate in still water and let C = rate river current
If the boat is going :
upstream, its rate is V-C and if going
downstream, its rate is V+C,
But V = 5C, then
Upstream Rate: 5C - C = 4 C
Downstream rate: 5C+C = 6C
Time = distance/Rate, (or time = distance/speed) , then:
Upstream time 12/4C and
Downstream time: 12/.6C
Upstream time +downstream time:= 2h30 ' then:
12/4C + 12/.6C = 2.5 hours
3/C + 2/C = 5/2 (2.5 h = 5/2)
Reduce to same denominator :
5C = 10 and Rate of the current = 2 mi/h
