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irina [24]
3 years ago
12

3. A man needed money for college. He borrowed $6,000 at 14% simple interest per year. If he paid $420 interest, what was the du

ration of the loan?
Mathematics
1 answer:
9966 [12]3 years ago
6 0

Answer: half year

Step-by-step explanation:

The formula to find the simple interest is given by :-

I=Prt, , where P is the principal amount , r is the rate of interest and t is the time in year.

Given : I=420 ; r=14%=0.14 and P =$6000

Then, we have the following equation :-

420=6000\times0.14 \times t\\\\\Rightarrow\ t=\dfrac{420}{6000\times0.14}=0.5

It means the duration of the loan is half year .

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Answer:

37.68

Step-by-step explanation:

C(circumference)= 2pi r

If the diameter is 12, the r adius is 6

plug into equation

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=37.68

3 0
3 years ago
A car travelled 72 km in 3/4 h. If the car is travelling at a constant rate how far will the car travel in one hour?
Anvisha [2.4K]

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96 km

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72/3 is 24. When yo add 24 to 72 you get 96km.

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3 years ago
Sasha sells T-shirts. Each day she earns a set amount, plus a commission.
WARRIOR [948]

Answer:

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5 0
3 years ago
A population of size 320 has a proportion equal to .60 for the characteristic of interest. What are the mean and the standard de
tiny-mole [99]

Answer:

The answer is c.) 0.6 and 0.14

Step-by-step explanation:

Given population has a size of 320.

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The mean of population, p = 0.6

The mean of sample, \hat{p}= 0.6

Therefore \hat{q}  = 1 - \hat{p} = 1 - 0.6  = 0.4

The sample size  = 12

Therefore the standard deviation of the sample,

s = \sqrt{\frac{\hat{p}(1 - \hat{p})}{n} }  = \sqrt{\frac{0.6 \times 0.4}{12} }  = 0.1414

The mean and the standard deviation for a sample size of 12 are 0.6 and 0.14 respectively.

The answer is c.) 0.6 and 0.14

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3 years ago
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inysia [295]

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2/10 I believe

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2 years ago
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