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3 years ago

The area of a circle is 28.26 square centimeters. What is its diameter (use 3.14 for ð)?

1 answer:

5 0

Area for circle is πr² so πr² =28.26 and we can sub 3.14 as pi
3.14*r²=28.26 we can divide by 3.14 to get r² on it's own
r²=28.26/3.14
then we root both sides to get r on it's own
28.26/3.14=9 √9=3
and the diameter is double the radius 3*2=6 so the diameter is 6

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1. A number is chosen at random from 1 to 25. Find the probability of not selecting a prime number.

Gnesinka [82]

Answer:

64%

Step-by-step explanation:

1. Nine prime numbers between 1 and 25.

2. 25-9 = 16

3. Sixteen non-prime numbers between 1 and 25.

4. 16/25 = 0.64 = 64%

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3 years ago

Grandma is making her grandson french toast. The pan can only fit two pieces of bread at a time. To cook each side of the bread

Anni [7]

Grandma should be able to make three slices of French toast by slicing one of the original slices into two.

<h3>How can grandma make three slices of French toast?</h3>

Put two slices of bread in the pan and cook them for one minute (first minute)
Turn both slices over and cook ( second minute)
Remove both slices and slice one of this into two. This will mean the new slices will have one side cooked and another one that is not cooked.
Cook these thinner slices (third minute).
The result would be three cooked slices, although two of them would be thinner.

Learn more about French toast in: brainly.com/question/11713135

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1 year ago

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Nutka1998 [239]

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3 years ago

Read 2 more answers

A house is being purchased at the price of $138,000.00. The 30-year mortgage has a 10% down payment at an interest rate of 4.875

Mama L [17]

Answer:

$238,600

Step-by-step explanation:

The amount being borrowed is 100% -10% = 90% of the purchase price, or ...

0.90 × $138,000 = $124,200.

Then the monthly payment can be computed using the amortization formula:

A = P(r/12)/(1 -(1 +r/12)^(-12t))

A = 124200(.04875/12)/(1 -(1 +.04875/12)^(-12·30)) ≈ 657.28

and the total repaid is ...

(360 months) × ($657.28/month) = $236,619.58*

The cost of mortgage insurance is considered part of the cost of the loan. That amount is ...

(77 months) × ($25.88/month) = $1992.76

so the total amount paid for the loan is ...

$236,619.58 +1992.76 = $238,612.34

The cost of the loan is about $238,600.

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* In figuring the total repayment cost, we used the full-precision value for the loan payment. The actual repayment amount will depend on the rounded value of the loan payment and the way the final payment is made. When rounded to the nearest $100, these details become unimportant.

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3 years ago

Find the ratio of the area inside the square but outside the circle to the area of the square in the picture

Eduardwww [97]

Answer:

0.2146

Step-by-step explanation:

From the picture:

The radius of the circle = r. This means that the area of the circle = πr²

Also For the square, the length of the square = 2r, Therefore the area of the square = Length × length = 2r × 2r = 4r²

The area inside the square but outside the circle = Area of square - Area of circle = 4r² - πr² = r²(4 - π) = 0.8584r²

The ratio of the area inside the square but outside the circle to the area of the square = r²(4 - π) / 4r² = (4 - π) / 4 = 1 - π/4 = 0.2146

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3 years ago