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2 years ago

ASAP PLEASE HELP!!

Mathematics

2 answers:

hoa [83]2 years ago

7 0

<h2>Answer:</h2>

D. save up and pay cash - is the right option.

<h2>Step-by-step explanation:</h2>

Calculating the cost of laptop in all scenarios:

Rent to own payment:

$150 each month for 12 months. Total becomes:

$150\times12=1800$ dollars.

Installment plan:

$100.83 each month for 12 months. Total becomes:

$100.83\times12=1209.96$ dollars.

Cash price is $1000.

So, the lowest is the cash price. For other options, you have to pay more.

Calculating the cost of refrigerator in all scenarios:

Rent to own payment:

$140 each month for 12 months. Total becomes:

$140\times12=1680$ dollars.

Installment plan:

$80.67 each month for 12 months. Total becomes:

$80.67\times12=968.04$ dollars.

Cash price is $800.

So, the lowest is the cash price. For other options, you have to pay more.

Therefore, the correct option will be :

D. save up and pay cash

jenyasd209 [6]2 years ago

5 0

Answer:

save up and pay cash

Step-by-step explanation:

paying cash is always the best idea and not trying to get so much debit. If you did one other otion and have the debit some emergency can come up and you will not be able to pay for that, and aying cash you save more money

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A car that retails for $14,999 has a sticker on the windshield that says, "$429/mo for 48 months." What interest rate is this ca

kkurt [141]

14,999(1+.o825)^4= 20,595. $429x48 months= 20,592
Interest rate 8 1/4%

Check 20592/14999= 1.37289
Log(1.37289)/ log(1.0825)= 3.99 years

4 0

2 years ago

Read 2 more answers

6.In a sample of 131 women with cosmetic dermatitis from using eye shadow, 12 were diagnosed with a nickel allergy. In a sample

aivan3 [116]

Answer:

a) $0.0916 - 1.96\sqrt{\frac{0.0916(1-0.0916)}{131}}=0.0422$

$0.0916 + 1.96\sqrt{\frac{0.0916(1-0.0916)}{131}}=0.1410$

So then we can conclude that the true proportion of women with cosmetic dermatitis from using eye shadow at 95% of confidence is between (0.0422 and 0.1410)

b) $\hat p = \frac{25}{250}= 0.1$

$0.1 - 1.96\sqrt{\frac{0.1(1-0.1)}{250}}=0.0628$

$0.1 + 1.96\sqrt{\frac{0.1(1-0.1)}{250}}=0.1372$

So then we can conclude that the true proportion of women with cosmetic dermatitis from using mascara at 95% of confidence is between (0.0628 and 0.1372)

c) For this case we see that both confidence intervals contains the value of 0.12 so then we can't conclude that only one group is referenced at the significance level of 0.05 used.

Step-by-step explanation:

Part a

The estimated proportion of women with cosmetic dermatitis from using eye shadow is given by:

$\hat p =\frac{12}{131}= 0.0916$

The confidence interval is at 95% of confidence, our significance level would be given by $\alpha=1-0.95=0.05$ and $\alpha/2 =0.025$ . And the critical value would be given by:

$z_{\alpha/2}=-1.96, z_{1-\alpha/2}=1.96$

The confidence interval for the proportion is given by the following formula:

$\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}$

Replacing we got:

$0.0916 - 1.96\sqrt{\frac{0.0916(1-0.0916)}{131}}=0.0422$

$0.0916 + 1.96\sqrt{\frac{0.0916(1-0.0916)}{131}}=0.1410$

So then we can conclude that the true proportion of women with cosmetic dermatitis from using eye shadow at 95% of confidence is between (0.0422 and 0.1410)

Part b: A 95% confidence interval for the women with cosmetic dermatitis from using mascara

$\hat p = \frac{25}{250}= 0.1$

$0.1 - 1.96\sqrt{\frac{0.1(1-0.1)}{250}}=0.0628$

$0.1 + 1.96\sqrt{\frac{0.1(1-0.1)}{250}}=0.1372$

So then we can conclude that the true proportion of women with cosmetic dermatitis from using mascara at 95% of confidence is between (0.0628 and 0.1372)

Part c: Suppose you are informed that the true proportion with a nickel allergy for one of the two groups (eye shadow or mascara) is .12. Can you determine which group is referenced? Explain.

For this case we see that both confidence intervals contains the value of 0.12 so then we can't conclude that only one group is referenced at the significance level of 0.05 used.

7 0

2 years ago

Chang and Carlotta solve this problem in two different ways. You have $50 in your bank account. You make $8 per hour mowing lawn

Tamiku [17]

HELLO,

Your answer is 130-50=80
You would have to make 80 dollars,

So 8 dollars per hour (of course that is below minimum wage that means you need a raise).

Therefore, you need to mow lawns for 10 hours

Thanks for posting your question here on brainly.
Hope this helps you.
Let me know if its correct.

3 0

2 years ago

Read 2 more answers

connie made 1 1/3 pounds of trail mix for a hike.Is there a way connie can break up the trail mix into four equal bags without h

mestny [16]

11/3 = 3.67
3.67 divided by 4 = 0.92

So, yes. You can have 4 bags with each one having 0.92 pound of trail mix.

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2 years ago

How many groups of 1/2 days are in 1 week

SSSSS [86.1K]

Answer:14

Step-by-step explanation: