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3 years ago

The side length of a square is blank meters find the area of the square and write your answer in simplest radical form.

Mathematics

1 answer:

elena-14-01-66 [18.8K]3 years ago

7 0

Answer:

77+24 $\sqrt{10}$ m²

Step-by-step explanation:

Since it is a square, the side lengths are the same. Multiply the side lengths by each other to find the area.

(4 $\sqrt{2}$ +3 $\sqrt{5}$ )(4 $\sqrt{2}$ +3 $\sqrt{5}$ )

= 32+12 $\sqrt{10}$ +12 $\sqrt{10}$ +45

= 77+24 $\sqrt{10}$ m²

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What is the area of a half circle with a radius of 40 cm?

Andre45 [30]

Answer:

5027 square centimeters (cm2)

Step-by-step explanation:

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2 years ago

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djyliett [7]

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3 years ago

The scatter plot shows the number of years of experience x and the hourly pay rate y for each of 25 cashiers in Ohio.

astra-53 [7]

Answer:

a) $y= 0.95*7 +7.95 =14.6$

b) $y= 0.95*0 +7.95 =7.95$

c) For this case we can use the slope from the linear model to answer this question, the 0.95 on this case represent the increase in the hourly pay rate per each year of experience, for example if we have one year of experience the pay rate increase 0.95. So then the answer for this case is 0.95.

Step-by-step explanation:

Assuming the following question: "The scatter plot shows the number of years of experience, x, and the hourly pay rate, y, for each of 25 cashiers in Ohio. x represent the number of years of experience and y the hourly pay rate. The line adusted is: y=0.95x+7.95, to answer the questions below. Give exact answers, not rounded approximations. "

(a) What is the predicted hourly pay rate for a cashier with 7 years of experience?

For this case we can use the lineal model given:

$y = 0.95 x +7.95$

And we can replace x =7 years and we got:

$y= 0.95*7 +7.95 =14.6$

(b) What is the predicted hourly pay rate for a cashier who doesn't have any experience?

For this case we just need to replace in the linear model x=0 since that means no experience and we got:

$y= 0.95*0 +7.95 =7.95$

(c) For an increase of one year of experience, what is the predicted increase in the hourly pay rate?"

For this case we can use the slope from the linear model to answer this question, the 0.95 on this case represent the increase in the hourly pay rate per each year of experience, for example if we have one year of experience the pay rate increase 0.95. So then the answer for this case is 0.95.

6 0

3 years ago

Molly opened a savings account with a one‐time deposit of $100 that will be left in the account for at least 5 years. The saving

Anettt [7]

The amount of interest Molly will earn after 5 years on a deposit of $\$100$ compounded annually over 5 years is $\$27.63$

First, we need to find the future value of her investment, then we subtract the original deposit from it to get the amount of interest she will get at the end of 5 years.

The future value of an investment that is compounded annually is given by

$A=P(1+r)^t$

where

$A=\text{Amount of money in Molly's account after 5 years}\\P=\text{Molly's initial deposit into her account}=\$500\\r=\text{The annual interest rate as a decimal}=0.05\\t=\text{The time the money is invested (in years)}=5$