Answer:
2 hours
Step-by-step explanation:
The relation between time, speed, and distance is ...
time = distance/speed
For a kayak speed of k miles per hour in still water, the speed upstream is (k-2) and the speed downstream is (k+2). Over the distances given, the times are the same, so we can write ...
10/(k-2) = 14/(k+2)
Multiplying by (k+2)(k-2) gives ...
10(k+2) = 14(k -2)
10k +20 = 14k -28 . . . . . eliminate parentheses
48 = 4k . . . . . . . . . . . . . . add 28-10k
12 = k
Then the time for 28 miles downstream is ...
time = 28 / (12 +2) = 2 . . . . hours
It will take the person 2 hours to kayak 28 miles downstream.
Are you asking to find 3/7 of 14? In that case the answer would be 6. 14 divided by 7 is 2 and 2x3 is 6!
Answer:
(X-6) √x^2+2x-15 \ x^2 +2x - 15
Answer:
55°
Step-by-step explanation:
180-125= 55
since they are supplementary, just subtract from 180
Step-by-step explanation:
58 +38 = 96 degree
so we do 180 - 96 = 84 degree valur of x for one triangle
so opposite side angke x will be 96
so again we do 96 +15 = 111 degree
180 - 111 = 69 degree
