3 years ago

Which of the two is correct it’s an emergency

Mathematics

1 answer:

Georgia [21]3 years ago

6 0

Answer:

D and E are the answers :)

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Circle A has a diameter of approximately 20 inches and an area of approximately 300 in2.

Katena32 [7]

Answer:

4. About 2,700 in2

Step-by-step explanation:

The area of a circle ( $A$ ), measured in square inches, is directly proportional to the square of its diameter ( $d$ ), measured in inches. That is:

$A \propto d^{2}$

$A = k\cdot d^{2}$

Where $k$ is the constant of proportionality, dimensionless.

In consequence, the following relationship between circles A and B is obtained:

$\frac{A_{B}}{A_{A}} = \frac{d_{B}^{2}}{d_{A}^{2}}$

The area of the circle B is now cleared:

$A_{B} =\left(\frac{d_{B}}{d_{A}} \right)^{2}\cdot A_{A}$

Given that $d_{A} = 20\,in$ , $d_{B} = 60\,in$ and $A_{A} = 300\,in^{2}$ , then:

$A_{B} = \left(\frac{60\,in}{20\,in} \right)^{2}\cdot (300\,in^{2})$

$A_{B} = 2700\,in^{2}$

Therefore, the correct answer is 4.

7 0

4 years ago

Evaluate the formula χ2=<br> (n−1)s2<br> σ2 when σ=3.32, n=38, and s=3.36.

denpristay [2]

Answer:

Step-by-step explanation:

7 0

3 years ago

REWARDING BRAINLY TO CORRECT ANSWER

Jlenok [28]

Answer:

Step-by-step explanation:

Add them all then divide the amount of numbers added.

5 0

3 years ago

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Mr king is going to paint his house. The paint costs 21.99$ a gallon or 93.65$ for a 5 gallon can. What would be the unit price

vampirchik [111]

Divide 93.65 by the 5 gallons.

93.65/5= 18.73

If me.king bought the larger container, the unit price would be $18.73 per gallon.

21.99-18.73= 3.26

The savings is $3.26 per gallon.

I hope this helps!
~kaikers

6 0

4 years ago

Please solve this. I need some help, will mark brainliest!

Marianna [84]

Answer is bottom left

1/2 inch per day and already planted 20 inches

4 0

3 years ago

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