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daser333 [38]
3 years ago
8

What is the circumference of a circle with a diameter of 85 feet?

Mathematics
1 answer:
Natalija [7]3 years ago
4 0

Answer:

267.04

Step-by-step explanation:

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How do I do 3? Thanks a bunch
Nataly_w [17]
A does

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3 years ago
20 points!! Pls help
Studentka2010 [4]

Answer:

<h3>(-4, 1)</h3>

Step-by-step explanation:

-x-3=y, therefore x = -y-3

-3x - 8y = 4

Find the value of y

Substitute the x in -3x - 8y = 4 with -y-3

We get

-3·(-y-3) - 8y = 4

3y + 9 - 8y = 4

-5y = 4-9

-5y = -5

<h3>y = 1</h3>

_______________

Find the value of x

x = -y-3

x = -1-3

<h3>x = -4</h3>

_______________

Answer (x, y) =

<h3>(-4, 1)</h3>

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3 years ago
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On a recent quiz, the class mean was 72 with a standard deviation of 4.2. Calculate the z-score (to 2 decimal places) for a pers
barxatty [35]

Answer:

The Z score of the person is -3.09.

Step-by-step explanation:

The standard normal deviate (Z) for a normal distribution is given by

Z=\frac{X-\bar{X}}{\sigma }

where,

X = the value of observation

\bar{X} is mean of the observations and

σ = standard deviation of the score

Applying values we get

Z=\frac{59-72}{4.2}=-3.09

5 0
3 years ago
How do I do this scientific notation problem?
lidiya [134]
You take the exponent and move that many places with the number that you get on the opposite side
3 0
2 years ago
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Approximate pi as 3.4*
Sholpan [36]

Answer:

C

C=2πR

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4 0
2 years ago
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