Answer: D 30%
Step-by-step explanation:amount change/amount start x 100%
(20-14)/20=.3
.3 x 100% = 30%
The expression is no very clear.
It seems to be - x / 7 + 4 < 3x
If so, this is the solution.
1) 3x + x / 7 > 4
2) 21x + x > 28
3) 22x > 28
4) x > 28/22
5) x > 14/11
Answer: x > 14 / 11
Answer:
B: 20 minutes
Step-by-step explanation:
Because it comes every 30 minutes and he is 10 minutes late we do
30-10=20
Therefore he has to wait 20 minutes for the next train.
Answer:
57 meters
Step-by-step explanation:
we know that
Sprint to the finish the professional cyclist travels 380 meters in 20 seconds
so
using proportion
Find out how far does the cyclist travel in 3 seconds
Let
x -----> the distance in meters
