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Nat2105 [25]
2 years ago
8

What is the circumference?

Mathematics
2 answers:
Tanya [424]2 years ago
8 0

Answer: the circumference is the perimeter of a circle or ellipse. That is, the circumference would be the arc length of the circle, as if it were opened up and straightened out to a line segment. More generally, the perimeter is the curve length around any closed figure.

STALIN [3.7K]2 years ago
8 0
Circumference formula: 2 x pi x radius
so... 2 x 3.14 x 6 = 37.68
c= 37.68 inches
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A plumber's daily earnings have a mean of $145 per day with a standard deviation of $16.50.
avanturin [10]

Step-by-step explanation:

The plumber's daily earnings have a mean of $145 per day with a standard deviation of

$16.50.

We want to find the probability that the plumber earns between $135 and

$175 on a given day, if the daily earnings follow a normal distribution.

That is we want to find P(135 <X<175).

Let us convert to z-scores using

z =  \frac{x -  \mu}{ \sigma}

This means that:

P(135  \: <  \: X  \: <  \: 175) = P( \frac{135 - 145}{16.5}  \: <  \:  z \:  <  \frac{175 - 145}{ 16.5} )

We simplify to get:

P(135  \: <  \: X  \: <  \: 175) = P(  - 0.61\: <  \:  z \:  <  1.82 )

From the standard n normal distribution table,

P(z<1.82)=0.9656

P(z<-0.61)=0.2709

To find the area between the two z-scores, we subtract to obtain:

P(-0.61<z<1.82)=0.9656-0.2709=0.6947

This means that:

P(135  \: <  \: X  \: <  \: 175) =0.69

The correct choice is C.

7 0
3 years ago
To solve the inequality -1/4x&gt;-2, Chrissy thinks she should add 1/4 to both sides. What is wrong with her first step?
Darina [25.2K]
Answer D because you want to get the x by itself and in order to do this she needs to multiply by -4 so that one side only has x.
5 0
3 years ago
Alano wants to make one and a half
alexdok [17]

Answer:

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Step-by-step explanation:

4 0
3 years ago
What is the algebraic expression for the following word phrase: the quotient of 8 and the sum of 3 and m?
serg [7]

we know that

the algebraic expression is equal to

\frac{8}{(3+m)}

therefore

<u>the answer is</u>

\frac{8}{(3+m)}


5 0
3 years ago
Read 2 more answers
Hi pls answer number 3’ill give brainliest thanks again!!
ira [324]

Answer:

It should be C

Step-by-step explanation:

I hope this helps

4 0
2 years ago
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