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AfilCa [17]
3 years ago
9

The formula for the area of a circle is A = r 2. Classify the area of a circle with a radius of 0.75 centimeters as either ratio

nal or irrational.
a) rational

b) irrational
Mathematics
1 answer:
OlgaM077 [116]3 years ago
6 0
First:The area of a circle is πr squared. Not r2
Second. The area of the circle HAS to be irrational because π is an irrational number. The answer would be, if solved for a circle with the radius of 0.75, the area would be 0.5625π, which is irrational. 
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Find the equation of the line
Elis [28]

Answer:

see explanation

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = 6x - 2 ← is in slope- intercept form

with slope m = 6

Given a line with slope m then the slope of a line perpendicular to it is

m_{perpendicular} = - \frac{1}{m} = - \frac{1}{6}, thus

y = - \frac{1}{6} x + c ← is the partial equation

To find c substitute (6, - 2 ) into the partial equation

- 2 = - 1 + c ⇒ c = - 2 + 1 = - 1

y = - \frac{1}{6} x - 1 ← equation of line

6 0
3 years ago
A courier service company wishes to estimate the proportion of people in various states that will use its services. Suppose the
kolbaska11 [484]

The probability that the sample proportion will be less than 0.04 is <u>0.8995</u> or <u>89.95%</u>.

The true proportion (p) is given to be 0.03.

Therefore, Mean (μ) = p = 0.03.

The standard error of sampling distribution can be calculated using the formula σ = √[{p(1 - p)}/n], where n, is the sample size, that is, n = 476.

Therefore, σ = √[{0.03(1 - 0. 03)}/476] = 0.00782.

Since, np = 14.28 and n(1 - p) = 461.72 are both greater than 5, we assume the sample is normally distributed.

Since, we are asked to find the probability that the sample proportion is <u>less than</u> 0.04, we using our calculator, enter as following:

Normalcdf(-100000000,0.04,0.03,0.00782), which gives us the value 0.8995 or 89.95%.

Thus, the probability that the sample proportion will be less than 0.04 is <u>0.8995</u> or 89.95%.

Learn more about probability of sampling distributions at

brainly.com/question/15520013

#SPJ4

5 0
1 year ago
<img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B8%20%7D%20%20%5Ctimes%20%20%5Csqrt%7B32%7D%20" id="TexFormula1" title=" \sqrt{8 }
Rudik [331]
That’s a weird input for a problem, it’s just a bunch of slashes, probably radical
3 0
2 years ago
What is 998 divided by 9?
jek_recluse [69]
It would be 110.888888889.

Hope This Helps You!
Good Luck Studying :)
3 0
3 years ago
Read 2 more answers
Find x and y thanks :D
Alika [10]
So wyou said she was going to
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3 years ago
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