The circumference of a circle is 12 pi inches. find its radius and area the radius of the circle isinthe area of the circle is _in^2

Answers

Answer 1

Answer: The circumference of a circle has the formula: 2*pi*r. So, we could easily determine the value of r.

C = 2*pi*r
12*pi = 2*pi*r
12 = 2r
r = 12/2
r = 6 inches

Knowing the r, we could find the area which has the formula

A = pi*r^2
A = pi*6^2
A = 113.1 square inches

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What is the recoprocal of 1 over 4

Answers

The reciprocal of 1/4 is 4/1

In any fraction you see like 1/5 or 1/10 and you need to find the reciprocal always flip them!

Hopefully this helps you!

0.5(12n – 8) = 26
show your work

Answers

Answer:

n=5

Step-by-step explanation:

divide by 0.5

6n-4=26

(add 4 to both sides)

6n=30

Divide both sides by 6

n=5

Have you ever worked with variables? Algebra is a branch of mathematics that specifically deals with the idea of using variables to solve problems. What kinds of problems have you already solved using variables? Do you know any real-life applications for variables?Think about the numbers you encounter in the world around you. Do you understand what they really mean? Interactions at grocery stores, gas stations, and online shopping commonly involve numbers. These interactions can be better understood using algebra. Is there anything you don’t know involving numbers that you wish you better understood?

Answers

Answer:

Well, I think we all worked with variables, but don't realise about it, because when people see these terms ''variable'', ''algebra'', they freak out.

The reality is that variables are everywhere, they are all those stuff that can variate: weigh, highness, money, population, interests, and so on.

A common problem I solved using variables is measuring time. For example, when I'm going to school I tend to calculate the time of my way.

Well, whenever you are playing a sport many things causes you to consider the variables. That is the first variable that popped in my head.

The phone you want to purchase is $200. You have a coupon for 30% off the purchase price. How much will you pay for the phone after the discount?

Answers

Answer:

$140

Step-by-step explanation:

Orignal Price: $200

200 x 0.3

= 60

200 - 60

= 140

Answer:the phone will cost 140

Step-by-step explanation:

A high school principal randomly polls 50 freshmen, 50 sophomores, 50 juniors, and 50 seniors regarding policy changes for after-school activities. What type of sampling method is used?

Answers

Answer: its systematic sampling

Step-by-step explanation:

Systematic sampling is a type of technique for creating a random probability sample in which each piece of data is chosen at a fixed interval for inclusion in the sample.

What is 1 - 27/44 = in its simplest form?