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3 years ago

What is the area of the circle?

Mathematics

1 answer:

Alika [10]3 years ago

3 0

Answer:The area of a circle is pi times the radius squared (A = π r²)

Step-by-step explanation:The area of a circle is pi times the radius squared (A = π r²)

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O. Shannon's hair is 12 inches long and grows 0.25 inch per

wariber [46]

Answer:

0.25 (inches?)

Step-by-step explanation:

the equation is:

y=mx+b

y is the length of her hair, the dependent variable, the outcome

m is the slope, which is in this case the growth of her hair in a month

x is the independent variable, or the number of months

b is how long her hair is to start with, which is 12 in

we are looking for m, which is the growth of her hair per month, which is given as 0.25 inches, so that would be the answer

3 0

4 years ago

A researcher drilled a hole in a die and filled it with a lead weight, then proceeded to roll it 209 times. The observed freque

ddd [48]

Answer:

Step-by-step explanation:

Given that the observed frequencies for the outcomes as follows:

To check this we can use chi square goodness of fit test.

$H_0: equally likely\\H_a: not equally likely$

(Two tailed test at 5% significance level)

Assuming equally likely expected observations are found out and then chi square is calculated as (0-E)^2/E

Df = 6-1 =5

Outcome Frequency Expected frequency (Obs-exp)^2/Exp

1 36 34.83333333 0.03907496

2 30 34.83333333 0.670653907

3 41 34.83333333 1.091706539

4 40 34.83333333 0.766347687

5 23 34.83333333 4.019936204

6 39 34.83333333 0.498405104

209 209 7.086124402

p value =0.214

Since p >alpha, we accept null hypothesis

It appears that the loaded die does not behave differently than a fair die at 5% level of significance

5 0

3 years ago

8^x times 2^(4-x) = 1<br> Find x.<br> With detailed steps.

Dafna1 [17]

Answer: x= -1

Step-by-step explanation:

In mathematics when you have bases that are the same while multiplying you add the powers. In this case we do not have the same bases so we are going to make it look like 8 is 2. So we sort of simplify it. So we get 8 and put into like 2^4. We do not eliminate the power x that was already there though. So we will have 2^4x × 2^4-x. So like I said earlier we add the powers. Soo we will have

4x +4-x
4x-x=1
3x+4-4 =1-4
3x/3 = -3/3
x= -1

<h2>Hope that helped!</h2>

7 0

3 years ago

6th grade

Alex Ar [27]

Answer:

Step-by-step explanation:

69/3 = 23 (1/3 of the customers)

23×2 = 46 (2/3 of the customers)

3 0

3 years ago

Find the slope. Please reply if you can help

aliina [53]

Answer:

1/1 because you go up 1 and over 1

7 0

3 years ago

Read 2 more answers

What is the area of the circle?​

What is the area of the circle?