X - speed of the current
40+x - speed with current
40-x - speed against current
t-time
(40+x)*t=100
(40-x)*t=60
40t+xt=100
<span> + 40t-xt = 60
</span> 80t =160
t = 2
40t+xt=100,
40*2+2x=100
80+2x=100
2x=100-80
2x=20
x=10 mi/h
10 mi/h speed of the current.
Answer:
12
Step-by-step explanation:
Given that :
Player who makes last move receives 11 - point bonus
Let s = score before end game bonus ; f = final score ;
Final score (f) when s = 1
Final score =) score before end game bonus) + 11 point bonus
Final score = 1 + 11 = 12
Answer:
53
Step-by-step explanation:
The difference that results from reversing the digits (18) is 9 times the difference of the digits.
- The two digits sum to 8.
- The two digits differ by 2.
If we let "t" represent the tens digit, then we have ...
t +(t-2) = 8
2t = 10 . . . . . add 2
t = 5 . . . . . . . divide by 2
Then the ones digit is 5-2 = 3, and the original number is 53.
_____
<em>Check</em>
53 -35 = 18
Answer:
No
Step-by-step explanation:
That is not enough,that is why it is a no
PLs mark brainly
Hope this helps:)
It’s x and x+9
(Hope this helps and that’s the only answer I can put)