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Tom [10]
2 years ago
14

Emilio borrows $1200 from a bank with 7.5% simple interest per year. How much will he have to pay back total in 4 years?

Mathematics
2 answers:
Eddi Din [679]2 years ago
5 0

Answer:

$1,560

Step-by-step explanation:

7.5% of $1,200 is 90. 90 times 4 (as in 4 years) is 360.

$360 plus $1,200 is $1,560.

seropon [69]2 years ago
4 0

Answer:

1560

Step-by-step explanation:

1200*0.075 = 90

1200+90+90+90+90

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Answer:

Answer: 170%

Step-by-step explanation:

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3 years ago
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According to creditcard , the mean outstanding credit card debt of college undergraduate was $3173 in 2010. A researcher believe
Mamont248 [21]

Answer:

a. The null and alternative hypothesis can be written as:

H_0: \mu=3173\\\\H_a:\mu< 3173

b. A Type I error is made when a true null hypothesis is rejected. In this case, it would happen if it is concluded that the actual mean outstanding credit card debt of college undergraduate is significantly less than $3173, when in fact it does not.

A Type II error is made when a false null hypothesis is failed to be rejected. In this case, the actual mean outstanding credit card debt of college undergraduate is in fact less than $3173, but the test concludes there is no enough evidence to claim that.

Step-by-step explanation:

We have a prior study of the mean outstanding credit card debt of college undergraduate that states that it was $3173 in 2010.

A researcher believes that this amount has decreased since then.

Then, he has to perform a hypothesis test where the null hypothesis states that the mean is still $3173 and an alternative hypothesis that states that the actual credit card debt is significantly smaller than $3173.

The null and alternative hypothesis can be written as:

H_0: \mu=3173\\\\H_a:\mu< 3173

3 0
3 years ago
Trees planted by a landscaping firm have a 90% one-year survival rate, If they plant 16 trees in a park, what is the following p
irina1246 [14]

Answer:

Pr(all will survive in one year) = 0.35 to 2 decimal places

Pr(at least 8 will survive) = 0.39 to 2 decimal places.

Step-by-step explanation:

Probability of a tree surviving one year is 0.9. While not surviving probability is 1 - 0.9 = 0.1

This is obtained from the 90℅ surviving rate for one year planted by the landscaping firm.

Probability that if 10 trees are planted, all will survive for one year is:

0.9x0.9x0.9x0.9x0.9x0.9x0.9x0.9x0.9x0.9 = 0.9^10 = 0.349

Probability that at least 8 will survive in one year can be expressed as

8 survived x 2 not survived +(or) 9 survived x 1 not survived +(or) 10 survived

= [(0.9^8)x(0.1^2) + (0.9^9)x(0.1^1) + (0.9^10)] = 0.391

Step-by-step explanation:

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3 years ago
Can someone help me with this math problem? I have no idea where to begin.<br> Solve: |y + 8| ≥ 3
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Since y+8 is positive, you don't have to find the absolute value since the absolute value is y+8. all you have to do is find a number that makes the statement true for y. the symbol between next to the 3 asks for a number that is greater or equal to 3. So your answer would be

≥-5
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3 years ago
Given the function (Image below) [Algebra ll]
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X= -1 and -11
Put -1 and -11 in for x. The answer comes out 6
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