Answer:
27 km/h (。◝‿◜。)
Step-by-step explanation:
Let's take the direction in which Diego is travelling as positive direction. Therefore:
- Diego is travelling at a velocity of +7 km/h, towards the net
- The ball travels at +20 km/h towards the net, with respect to Diego's reference system
Therefore, the velocity of the ball with respect to the net reference system is equal to the sum of the two velocities:
40% of 40
10% of 40 is 4
4 x 4=16
40-16 =24
Answer is 24
Answer:
20 days
Step-by-step explanation:
t = time required by one worker to complete the job alone
(t+8) = time required by the other worker
So:
7.5/ t + 7.5/ (t + 8) = 1
Solve for t.
...
t = 12 days, the first guy working alone
The other worker would finish the job in 20 days.
X should equal to 17 but i dont see what ben did...
Answer:
8x^3 + 4x^2 + 4x -7
Step-by-step explanation:
Add like terms.