He will earn £360, for a total in his account of £1560.
The formula for simple interest is
I = prt, where I is the amount of interest, p is the principal invested or borrowed, r is the rate as a decimal number, and t is the amount of time. Using our information we have:
I = 1200(0.1)(3) = 360
This is the amount of interest. We add this to his original 1200 to get the total amount:
1200 + 360 = 1560.
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Answer:
30 hours
Step-by-step explanation:
We need to convert these to the same period of time
A. 300 minutes
B. 30 hours
30 hours * 60 minutes/ 1 hour = 1800 minutes
C. 0.3 days
.3 days * 24 hours/ 1 day * 60 minutes/ 1 hours =432 minutes
D. 30,000 milliseconds
30 000 ms * 1 seconds/ 1000 ms * 1 minute/60 seconds = .5 minutes
1800 minutes is the longest
Answer:
65°
Step-by-step explanation:
81°+124°+90° (right angle) = 295
360-295 = 65°
Answer: Point of estimation = 32.60
Margin of error = 1.175.
95% confidence interval would be (81.95,84.45).
Step-by-step explanation:
Since we have given that
n = 49
Average = $32.60
Standard deviation = $5
We need to find:
1) Point of estimation for the mean of the population:
2) At 90% level of confidence, z = 1.645
Margin of error would be
So, Margin of error = 1.175.
3) At 90% level of confidence, interval would be
Hence, 90% confidence interval would be (31.43,33.76).