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2 years ago

The circumference of a circle is 87 cm. What is the DIAMETER of the circle?

Mathematics

1 answer:

natulia [17]2 years ago

6 0

Answer:

27.70

Step-by-step explanation:

you have to do 87 divided by the pi you only have to do 3.14 as the pi.

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Unit 17- calculations

OLEGan [10]

What exactly is your question?

4 0

2 years ago

Read 2 more answers

3-12t+8t simplify each Expression

kakasveta [241]

Combine the like terms:

3 - 12t + 8t = 3 - 4t

simplified answer is

-4t + 3

3 0

3 years ago

Find the slope of the line passing through the points (1, -4) and (3, -1)

Olin [163]

E 3/2. I graphed it:).

4 0

2 years ago

Suppose the heights of women at a college are approximately Normally distributed with a mean of 65 inches and a population stand

Zigmanuir [339]

Answer:

Step-by-step explanation:

Hello!

The variable of interest, X: height of women at a college, has an approximately normal distribution with mean μ= 65 inches and standard deviation σ= 1.5 inches.

You need to look for the value of height that marks the bottom 20% of the distribution, i.e. the height at the 20th percentile of the normal curve, symbolically:

P(X≤x₀)= 0.20

To know what value of height belongs to the 20% of the distribution, you have to work using the standard normal distribution and then reverse the standardization with the population mean and standard deviation to reach the value of X. So the first step is to look for the Z-value that accumulates 20% of the distribution:

P(Z≤z₀)=0.20

z₀= -0.842

z₀= (x₀-μ)/σ

z₀*σ= (x₀-μ)

x₀= (z₀*σ)+μ

x₀= (-0.842*1.5)+65

x₀= 63.737 inches

I hope it helps!

6 0

3 years ago

Read 2 more answers

Braxton loves downloading new music he originally had 41 songs but plans to purchase 4 new songs each week. he wants to know how

ycow [4]

Answer:

$a_110=41+(110-1)4$

Step-by-step explanation:

He already has songs = 41

Since we are given that he purchase four songs every week .

So, in first week he purchase songs = 4

Initially he already has 41 songs

So, total songs after 1 week = $41+(4\times1)=45$

After 2 weeks he will have songs = $41+(4\times 2)=49$

This forms an arithmetic sequence : 41,45,49......

Formula of nth term in A.P. : $a_n=a+(n-1)d$

a = first term = 41

d = common difference = 45-41=49-45=4

Since we are required to find the new songs after110 weeks

So, n =110

Substituting values :

$a_110=41+(110-1)4$

Thus Option A is correct.

4 0

2 years ago