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2 years ago

Find the area of a circle with a diameter of 20 inches. Use 3.14 for pi.

2 answers:

5 0

<span>d = 20 inches
r = d/2 = 20/2 = 10 inches
Area = πr^2
= 22/7 * 10^2 inch^2
= 2200/7 inch^2
= 314.2 inch^2
Therefore, Answer is B. 314.2 in^2 Ans</span>

kkurt [141]2 years ago

3 0

You find the area of a circle by finding the radius and multiplying. The radius is a half of the diameter, so the radius of your circle is 10. The area of the circle is 100pi because the diameter is 10, and to find the area you multiply the radius by itself. 10×10=100

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How do I do this. I don’t understand how to move place values

Drupady [299]

For this case we must indicate the value of the following expression, expressed in scientific notation:

$(1.2 * 10^{-3}) * (1.1 * 10^{8}) =$

We have that for multiplication properties of powers of the same base, the same base is placed and the exponents are added:

$a ^ n * a ^ m = a ^ {n + m}$

Then, rewriting the expression we have:

$(1.2 * 1.1) * 10 ^{- 3 + 8} =\\1.32 * 10 ^ 5$

Answer:

$1.32 * 10 ^ 5$

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3 years ago

. Tickets to a football game cost a dollars for adults and s dollars for students. If a family of 2 adults and 3 students buy ti

garri49 [273]

Answer:

Choice C is the answer.

Known information:

a = adult $

s = student $

We have 2 adults and 3 students.

Step-by-step explanation:

To find the total price of tickets given a # of students and adults, multiply a by the # of adults and multiply s by the # of students. Therefore, it would look like this:

2a + 3s = price

Therefore, choice C is the answer.

Hope this helps!

3 0

2 years ago

The product of a number and 9, increased by 4, is 58. Find the number.

diamong [38]

9x + 4 = 58
9x = 54
x = 6

The number is 6.

4 0

3 years ago

Expand x(4x+1) answer for this please

Sonbull [250]

Answer:

4x^2 + x

Step-by-step explanation:

just multiply x to each of the terms.

4 0

3 years ago

Read 2 more answers

Martin likes to make flower bouquets that have 3 daffodils and 4 tulips per vase. A daffodil has a mass of d grams, a tulip has

Elza [17]

Answer:this is the order of the things to put them

number of bouquets: 5

mass of bouquets: 3d+4t+v

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mass of the daffodils in one bouquet: 3d

Step-by-step explanation:

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3 years ago