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andrew-mc [135]

1 year ago

10

The formula for the circumference of a circle is C = 2r, where r is the radius and C is the circumference. The equation solved f

or r is r = r equals StartFraction C Over 2 pi EndFraction..
Find the radius of a circle that has a circumference of 16.

r = 4
r = 8
r = 12
r = 16

2 answers:

larisa [96]1 year ago

6 0

Answer:

r=8

Step-by-step explanation:

Because 16 divided by 2 is 8

Jobisdone [24]1 year ago

6 0

Answer:

r=8

Step-by-step explanation:

idk i cheat lol

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tyler wants to use $300 he has saved to buy a new guitar and join a music club. the guitar costs $140. the music club has a $25

tresset_1 [31]

So first tyler has to purchase his guitar. 300-140=160. he has 160 dollars to spend on the music club. Tyler can afford the membership for 13 months and he will have $4.65 left

4 0

2 years ago

Which expression is equivalent to the following complex fraction?

bulgar [2K]

Solving the fraction $(\frac{-2}{x}+\frac{5}{y})\div (\frac{3}{y}-\frac{2}{x})$ we get $=(\frac{-2y+5x}{3x-2y})$

So, Option A is correct answer.

Step-by-step explanation:

We need to solve the complex fraction: StartFraction negative 2 Over x EndFraction + StartFraction 5 Over y EndFraction divided by StartFraction 3 Over y EndFraction minus StartFraction 2 Over x EndFraction

Writing in mathematical form:

$(\frac{-2}{x}+\frac{5}{y})\div (\frac{3}{y}-\frac{2}{x})$

Solving the fraction:

$(\frac{-2}{x}+\frac{5}{y})\div (\frac{3}{y}-\frac{2}{x})\\Taking\,\,LCM\\=(\frac{-2y+5x}{xy})\div (\frac{3x-2y}{yx})\\Converting\,\,\div \,\,into\,\,multiplication\\=(\frac{-2y+5x}{xy})\times (\frac{yx}{3x-2y})\\Canceling\,\,like\,\,terms:\\=(\frac{-2y+5x}{3x-2y})$

So, solving the fraction $(\frac{-2}{x}+\frac{5}{y})\div (\frac{3}{y}-\frac{2}{x})$ we get $=(\frac{-2y+5x}{3x-2y})$

In words the answer will be: StartFraction negative 2 y + 5 x Over 3 x minus 2 y EndFraction

So, Option A is correct answer.

Keywords: Fractions

Learn more about fractions at:

#learnwithBrainly

7 0

2 years ago

Read 2 more answers

Ramon has 6.75 kg coffee. he wants 0.25 kg bags. how many bags does he need?

Hatshy [7]

Answer:

Ramon would need 27 bags

Step-by-step explanation:

This is because if you divide 6.75 by 0.25 you would get 27

5 0

2 years ago

Which pair of undefined terms is used to define a ray?

Romashka-Z-Leto [24]

A point and a line.

<h3>Further explanation </h3>

Ray is part of the line with one endpoint. Ray is an endless straight path in one direction from a starting point, e.g., $\boxed{ \ \overrightarrow{PQ} \ }$ .

The arrow above the point shows the direction of the longitudinal beam. The length of the ray cannot be calculated.

Undefined terms are basic figure that is not defined in terms of other figures. The undefined terms (or primitive terms) in geometry are a point, line, and plane.

These key terms cannot be mathematically defined using other known words.

A point represents a location and has no dimension (size). It is labeled with a capital letter and a dot.
A line is an infinite number of points extending in opposite directions that have only one dimension. It has one dimension. It is a straight path and no thickness.
A plane is a flat surface that contains many points and lines. A plane extends infinitely in all four directions. It is two-dimensional. Three noncollinear points determine a plane, as there is exactly one plane that can go through these points.

<h3>Learn more </h3>

Which points are coplanar and noncollinear? brainly.com/question/4165000
Definition of the line segment brainly.com/question/909890
What are three collinear points on a line? brainly.com/question/5795008

Keywords: which pair of undefined terms, to define a ray, point, line, plane, endpoint, one direction, the arrow

4 0

2 years ago

Read 2 more answers

The alpha level that a researcher sets at the beginning of the experiment is the level to which he wishes to limit the probabili

Lelu [443]

Answer:

Kindly check explanation

Step-by-step explanation:

The alpha level set at the beginning of of an experiment is used by the researcher to the limit the probability if making a type 1 error. The type 1 error is committed when a true null hypothesis is incorrectly rejected.

The type 2 error on the other hand is committed when fail to reject a false null hypothesis.

Hence, in other to forestall the risk of incorrectly rejecting a true null hypothesis, the alpha level is set.

When critical region is split across both tails of the distribution, The z-score boundaries at an alpha level α = .05

α = .05 (95% confidence level)

When region is split into 2:

α/2 = .05/2

α/2 = 0.025

Loooking up the z table for the Zscore with probability of 0.025

Zscore = ±1.96

8 0

2 years ago