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2 years ago

PLEASE HELP:

Mathematics

1 answer:

barxatty [35]2 years ago

6 0

Answer:

$4,224.53

Step-by-step explanation:

We begin by converting the problem into a linear equation

x = 3981.22 + 87 + 0.012x +0.025x...where x represents her gross monthly income

x = 4068.22 + 0.037x

x - 0.037x = 4068.22

0.963x = 4068.22

x = 4068.22/0.963

x = $4,224.53

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Cooper is measuring ingredients for his special dessert. He needs a total of 70.4 mL of milk and melted butter. The recipe calls

Pavlova-9 [17]

Answer:

Cooper needs 39.8 mL milk for his recipe

Step-by-step explanation:

Let B be the quantity of butter

and

m be the quantity of milk

<u>So according to given statement the whole mixture measures 70.4 mL while butter measures 30.6mL</u>

so,

B+m = 70.4

30.6 + m = 70.4

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Cooper needs 39.8 mL milk for his recipe ..

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2 years ago

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I would like to purchase 20 products at a cost of $65 per product. What would be my total with 3.5 sales tax

alexandr402 [8]

Answer:

Answer:

The total is: $ 1345.5

Step-by-step explanation:

It is given that:

I would like to purchase 20 products at a cost 65.00 per product.

This means that the cost of 20 products will be:

Also, there is a sales tax of 3.5%

This means that a person has to pay a extra 3.5% on the total cost of the items he purchased.

i.e. he need to pay 3/5% on $ 1300

This means that the amount of tax he need to pay is: 3.5% of 1300

= 3.5%×1300

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= $ 45.5.

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2 years ago

A car insurance company suspects that the younger the driver is, the more reckless a driver he/she is. They take a survey and gr

erastovalidia [21]

Answer:

The confidence interval for the difference in proportions is

$-0.028\leq p_1-p_2 \leq 0.096$

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Step-by-step explanation:

We have to construct a confidence interval for the difference of proportions.

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The estimated standard error is:

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The z-value for a 95% confidence interval is z=1.96.

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$LL=(p_1-p_2)-z*\sigma_p=0.034-1.96*0.0316=0.034-0.062=-0.028\\\\\\UL=(p_1-p_2)+z*\sigma_p=0.034+1.96*0.0316=0.034+0.062=0.096$

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<em>Can it be concluded that there is a difference in the proportion of drivers who wear a seat belt at all times based on age group?</em>

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This means that we are not confident that the actual difference of proportions is positive or negative. No proportion is significantly different from the other to conclude there is a difference.

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tamaranim1 [39]

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Answer:

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