9514 1404 393
Answer:
- boat: 72 km/h
- current: 16 km/h
Step-by-step explanation:
The speed difference between boat and current is the upstream rate:
(448 km)/(8 h) = 56 km/h
The sum of speeds of boat and current is the downstream rate:
(440 km)/(5 h) = 88 km/h
The rate of the boat is half the sum of these:
(56 +88)/2 = 72 . . . km/h
The rate of the current is half their difference:
(88 -56)/2 = 16 . . . km/h
The rate of the boat is 72 km/h; the rate of the current is 16 km/h.
For finding, the sum of last ten terms, we write the given AP in reverse order i.e, 126, 124, 122,..., 12, 10, 8
Hence,first term (a) = 126, common difference, (d) = 124 - 126
So,
Answer:
m=-3
Step-by-step explanation:
first multiply every thing out
3-18-4m=m
simplify
-15-4m=m
get all m's on one side
-15=5m
divide both sides by 5 to isolate m
-3=m
D= distance ---> distance would be on the y-axis if put on a graph
t= time in hours --> time would be on your x-axis
d=5h
Answer:
i. 0.0025
ii. 0.25%
Step-by-step explanation:
Given,
In account A,
Annual percentage rate = 3%,
Here, the compounding period is calculated monthly,
We know that,
1 year = 12 months,
Thus, the compounding percentage rate =
∵ 1% = 0.01
⇒ 0.25% = 0.0025
So, the monthly rate in decimal form = 0.0025