MATHEMATICS COLLEGE

A person invests 4000 dollars in a bank. The bank pays 6.25% interest compoundedannually. To the nearest tenth of a year, how long must the person leave the money
in the bank until it reaches 9600 dollars?

Answers

Answer 1
Answer:

Answer:

14.4

Step-by-step explanation:

Given that :

Principal = 4000

Interest (r) = 6.25% compounded annually

Calculate time, t, if final amount A = 9600

Using the compound interest formula :

A = P(1 + r/n)^n*t

A = final amount

n = number of times interest is applied per period

9600 = 4000(1 + 0.0625)^t

9600 = 4000(1.0625)^t

9600/4000 = 1.0625^t

2.4 = 1.0625^t

Take the log of both sides

0.3802112 = 0.0263289t

t = 0.3802112/0.0263289

t = 14.440811

t = 14.4 ( nearest tenth)

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Which fractions convert into repeating decimals? Select ALL that apply. 4/40. 12/100. 3/18. 1/5. 9/27​

Answers

9/27 & 3/18 are repeating decimals

Answer:

3/18     = 1.6666

9/27​    = 0.3333

Step-by-step explanation:

4/40    = 0.1

12/100 = 0.12

3/18     = 1.6666

1/5       = 0.2

9/27​    = 0.3333

I need help with this! thanks​

Answers

Answer:

it should be about 6. try measuring the the 3 line with paper or something then put it on the other line

Step-by-step explanation:

Please help me with this,............

Answers

Answer:

a_(n) = 5n - 22

Step-by-step explanation:

The n th term of an arithmetic sequence is

a_(n) = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Given a₂ = - 12 , then

a₁ + d = - 12 , that is

a₁ + 5 = - 12 ( subtract 5 from both sides )

a₁ = - 17

Thus

a_(n) = - 17 + 5(n - 1)

    = - 17 + 5n - 5

     = 5n - 22

What is 28% of 250 Takis?

Answers

The answer is 70.......

Answer:

28% of 250 is 70

Step-by-step explanation:

If you turn 28% into a decimal it will turn into 0.28 so then multiply that by 250 and you'll get 70

A teacher is interested in performing a hypothesis test to compare the mean math score of the girls and the mean math score of the boys. She randomly selects 10 girls from the class and then randomly selects 10 boys. She arranges the girls' names alphabetically and uses this list to assign each girl a number between 1 and 10. She does the same thing for the boys. a. Paired t-test. Since there are 10 boys and 10 girls, we can link the two samples.
b. Paired t-test. Since the boys and girls are in the same class, and are hence dependent samples, they are can be linked.
c. 1-sample t-test. The teacher should compare the sample mean for the girls against the population mean for the boys.
d. Two-sample t-test. There is no natural pairing between the two populations.

Answers

Answer:

d. Two-sample t-test. There is no natural pairing between the two populations.

Step-by-step explanation:

A two-sample t - test is a test performed on the data of two random samples, each independently obtained from a different given population. The purpose of the test is to determine whether the difference between these two populations is statistically significant.

Independent samples are samples that do not affect one another. The mean math scores of the samples of boys and girls do not affect each other. They are independent samples, hence the correct test procedure is two - sample t - test

Can anyone find out?

Answers

Answer:

i think its 85

Step-by-step explanation:

Answer:

D

Step-by-step explanation:
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