All categories

2 years ago

If the radius of a circle is 10 feet, how long is the arc subtended by an angle measuring 81°?

1 answer:

4 0

<span>The length of an arc, L = theta/360 * 2 * pie * r Where theta = 81 and r = 10ft = 3.048m So length = 81/360 * 2 * pie * 3.048 L = * 0.225 * 2 * pie * 3.048 L = 1.37 * pie L = pie. Option A</span>

You might be interested in

The volume of a rectangular box can be found using the formula lwh where l represents the length, w represents the width, and h

Dafna1 [17]

Answer:

120 cm^3

Step-by-step explanation:

volume = lwh

I = 4 centimeters

w = 5 centimeters

h = 6 centimeters

volume = (4 cm)(5 cm)(6 cm)

volume = 120 cm^3

6 0

2 years ago

If you want brainiest and thanks and 10 points please help me with this question... Evaluate a+(−b) where a=4 and b=2

Vesna [10]

Answer:

a + (-b) = 4 + (-2) = 4 - 2 = 2

6 0

2 years ago

Please help! Giving brainliest if you include explanation bc I need to learn this

zhannawk [14.2K]

Answer:

B is the most reasonable answer

Step-by-step explanation:

btw 9% of 578 is 52.02, so it works

7 0

2 years ago

Read 2 more answers

How to do premutations

LenKa [72]

https://www.khanacademy.org/math/precalculus/prob-comb/combinatorics-precalc/v/permutation-formula

I would watch a bunch of videos or ask a teacher or something for help

8 0

2 years ago

Find the coefficient of correlation between and X and Y if covariance between X and Y is 15 and the variance of X and Y are resp

IRINA_888 [86]

Answer:

0.95

Step-by-step explanation:

$Correlation \ coefficient \ (r) = \dfrac{covaraince \ between \ X \ and \ Y }{SD_X \times SD_Y }$

$Correlation \ coefficient \ (r) = \dfrac{15 }{10^{1/2} \times 25^{1/2} }$

$Correlation \ coefficient \ (r) = \dfrac{15 }{3.162 \times 5 }$

$Correlation \ coefficient \ (r) = \dfrac{15 }{15.81 }$

$Correlation \ coefficient \ (r) \simeq 0.95$

5 0

2 years ago