Answer:9
Step-by-step explanation:
<span>going downstream -
t = 14/(2 + v)
going upstream -
t = 7/(2 - v)
14/(2 + v) = 7/(2 - v)
(2 + v)/2 = 2 - v
v = 2/3km/h</span><span>
</span>
Given problem:
What is 9*5;
The formula P*Q = P x Q - 7;
To find 9*5, simply make P = 9 and Q = 5
Input into the equation and solve;
P*Q = P x Q - 7 = 9 x 5 - 7
= 45 - 7
= 38
The solution to this problem is 38.
17/2= 8.5 so any number that is greater than 8.5 will be the answer to the question