Answer:Lucas is faster
Step-by-step explanation:
Distance = speed × time
Time = distance × speed
the path from the bottom to the top of the mountain was 2 miles.
James climbed at an average rate of 3 mph. This means that the time it took James to climb to the top of the mountain would be
2/3 hours
James ran back at 4 mph. This means that the time it took James run back to the bottom of the mountain would be
2/4 = 1/2 hours
Total time that James spent would be
2/3 + 1/2 = 7/6 = 1.7 hours.
Lucas climbed at an average rate of 2 mph. This means that the time it took Lucas to climb to the top of the mountain would be
2/2 = 1 hour
Lucas ran back at 5 mph. This means that the time it took Lucas to run back to the bottom of the mountain would be
2/5 hours
Total time that James spent would be
1 + 2/5 = 1.4hours.
Answer:
140°
Step-by-step explanation:
155°-15° =140°
Because it is 5 units to the left of 3 on a horizontal number line
Answer:
15 and 270
Step-by-step explanation:
Using the rule of radicals
× = a
![\sqrt[3]{a}](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7Ba%7D)
× × = a
(a)
Given
(
)² × (
)²
= 5 × 3
= 15
(b)
Given
(![\sqrt[3]{9}](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B9%7D)
)³ × (
)²
= 9 × 30
= 270
Answer:
after one day, 96.8 % are still there
and from this portion will remain 96.8% one day later
so you multiply 0.968 by itself seven times
0,968^7 = 0.7964
<h3>After one week there are 79.64 % left.</h3>
