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3 years ago

The graph shows the balance of an account earning quarterly compound interest.

Mathematics

2 answers:

Pachacha [2.7K]3 years ago

6 0

The answer would be B, C, and D.

Oksi-84 [34.3K]3 years ago

6 0

Answer:

Just as Kiara11003 said, the answers are

"The practical range is y≥100 , so the account balance is always positive."

"The graph is ascending, indicating that the account balance is increasing over time."

"The account balance will be $222.11 after 40 years."

I have just taken the test and these answers were correct.

Step-by-step explanation:

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Please help ASAP will mark brainiest

yawa3891 [41]

Answer:

Yes, they are proportional.

Step-by-step explanation:

Using this from what I found helped me answer the question, and if you compare their ratios, they are both going to show that 75% each class have texted:

Proportional: When quantities have the same relative size. In other words they have the same ratio.

All you would have to do is compare the amount of students that texted(x) to the amount of students there are total in the class(y). When you compare them in a y:x format, it will all lead up to the results showing that 75% of both groups have texted.

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3 years ago

1. Is the equation true, false, or open? 9p + 8 = 10p + 7 A. Open; there is a variable. B. True; the expressions are the same fo

hram777 [196]

C. False; the expression are never the same

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3 years ago

Find the value of 10! (10-3) A. 70 B. 120 O C. 5040 O D. 720

GarryVolchara [31]

Answer:

The answer is option D.

Step-by-step explanation:

$\frac{10!}{(10 - 3) ! } = \frac{10!}{7!} = \frac{3628800}{5040} = 720$

Hope this helps you

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3 years ago

Relatively Simple Math, pls lend a hand. 50 points and Brainliest

baherus [9]

B is the correct answer ,,,

4 0

2 years ago

The CEO of a large electric utility claims that more than 75 percent of his customers are very satisfied with the service they r

vichka [17]

Answer:

$z=\frac{0.77-0.75}{\sqrt{\frac{0.75(1-0.75)}{100}}}=0.462$

Now we can find the p value using the alternative hypothesis with this probability:

$p_v =P(z>0.462)=0.322$

Since the p value is large enough, we have evidence to conclude that the true proportion for this case is NOT significanctly higher than 0.75 since we FAIL to reject the null hypothesis at any significance level lower than 30%

Step-by-step explanation:

Information provided

n=100 represent the random sample selected

$\hat p=0.77$ estimated proportion of students that are satisfied

is the value that we want to test

z would represent the statistic

$p_v$ represent the p value

System of hypothesis

We want to verify if more than 75 percent of his customers are very satisfied with the service they receive, then the system of hypothesis is.:

Null hypothesis: $p\leq 0.75$

Alternative hypothesis: $p > 0.75$

The statistic is given by:

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

Replacing the info given we got:

$z=\frac{0.77-0.75}{\sqrt{\frac{0.75(1-0.75)}{100}}}=0.462$

Now we can find the p value using the alternative hypothesis with this probability:

$p_v =P(z>0.462)=0.322$

Since the p value is large enough we have evidence to conclude that the true proportion for this case is NOT significanctly higher than 0.75 since we FAIL to reject the null hypothesis at any significance level lower than 30%

4 0

3 years ago