How do you calculate the circumference of a circle

Answers

Answer 1

Answer: $2\pi r$ where 'r' is a radius

Answer 2

Answer: You need to use the following equation - 2(pi) r . r = radius and so put the circle's radius in the equation and multiply!

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A pool shaped like a rectangle prism is 40 feet long 20 feet wide and 4 feet deep attached to the side of the pool is a hot tub with 1/4 the volume of the pool what is the total volume of the pool and hot tub?

Could someone explain number 18?

Answers

The process and answer are in the picture. If you’re satisfied, could you please give me a brilliant answer! :)

It is going to be X= -19

A bag contains 10 red marbles, 7 blue marbles, and 3 green marbles. You randomly select a marble from the bag, record the color, and then put that marble back in the bag. If you were to do this 200 times, how many times would you expect to pull out a blue marble?

Answers

Answer:

Step-by-step explanation:

We have 7 blue marbles, and 20 total marbles. As a result, if we randomly chose one marble from the bag, the probability would be (number of favorable outcomes)/(number of total outcomes) = 7/20.

This means that for each 20 trials, we would expect to pull out a blue marble 7 times, as the probability does not change over time (because we put the marbles back, there are the same amount of each marble). Over 200 trials, we can simply make it out of 200 instead of 20. We can thus multiply 7/20 by 10/10 (10/10 is equal to 1, keeping the proportions equal) to get 70/200, so we can expect 70 blue marbles out of 200.

A submarine is 45 feet below sea level. The submarine then rises 12 feet. After a while,the submarine dives another 22 feet. At what depth is the submarine at?

Answers

Answer:

Step-by-step explanation:

45-12+22

Answer:

55 feet

Step-by-step explanation:

you do 45-12=33+22

Which statement is true about a line and a point? A point and a line have length as a dimension to measure.

A point is a location and a line has many points located on it.

A line and a point cannot lie on the same plane.

A line and a point cannot be collinear.

2. Trisha drew a pair of line segments starting from a vertex.

Which of these statements best compares the pair of line segments with the vertex?

The line segments and the vertex have length as a dimension of measurement and there are three collinear points on each.

Line segments and the vertex have two endpoints each and the distance between the end points is their dimension.

Line segments have two endpoints and a vertex is a common endpoint where two line segments meet.

The line segments and the vertex have their lines extending in one direction only and the lengths of both are infinite.

Answers

1. The statement that is true about a line and a point is a point is a location and a line has many points located on it.
2. The statement that best compares the pair of line segments with the vertex is that line segments have two endpoints and a vertex is a common endpoint where two line segments meet.

How many solutions does this system have?Y = x + 5
Y = -5x – 1
A) One
B) None
C) Infinite
D) Two

Answers

Well this does take some work on scratch paper but ill let you know that we have to plug these in to make one whole big equation
lets do that!
x + 5 = -5x - 1 now add +1 to both sides of the equation
+ 1 = +1 it cancels out on the right side and we solve on the left
*****************
x + 6 = -5x Now lets subtract that(1x) from both sides
-1x = -1x ( if x stands alone, theres always an imaginary 1 right by it)
************** now -5 - 1 = -6 so its -6x
6 = -6x Now divide both sides by -6 to isolate x to be alone
÷-6 = ÷6 It cancels out on the right side and we solve on the left
************ 6 ÷ -6 = 0 so lets see what we have
0 = x
Since zero is still a number this means there is only 1 solution!
Answer = A.) one
I hope this helps!
and dont forget 2
MARK ME BRIANLIEST!
=)

Which statement models this situation? The time between airline arrivals must be more than 2 minutes. A. t > 2 B. t = 2 C. t < 2 D. t + 2 > 0

Answers

the answer might be A because (time between airline arrivals MUST be more than 2 minutes) in letter A it shows that time is more than the 2 minutes hope this helps =)

The answere is A it says more than teo minutes

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