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Svetllana [295]
3 years ago
12

If the variance of the ages of the people who attended a rock concert is 22, what is the standard deviation of the ages? Round y

our answer to two decimal places
Mathematics
2 answers:
antoniya [11.8K]3 years ago
7 0
For the answer to the question above asking i<span>f the variance of the ages of the people who attended a rock concert is 22, what is the standard deviation of the ages?
The answer is sqrt of 22

which is </span><span>4.69041575982 or 4.69
 I hope my answer helped you.</span>
Rufina [12.5K]3 years ago
7 0

Answer:

If the number of people who attend the concert is 22, the answer is 4.69.

If the number of people who attend the concert is 38, the answer is 6.16.

-Apex

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A party rental company has chairs and tables for rent. The total cost to rent 4 chairs and 8 tables is $89 . The total cost to r
puteri [66]
Let C = cost to rent each chairLet T = cost to rent each table

 4C + 8T = 73
2C + 3T = 28 
Multiply the 2nd equation by (-2) and then add the equations together 

  4C + 8T = 73
-4C - 6T = -56
 2T = 17T = 17/2 = 8.5

 Plug this in to the 1st equation to solve for C
 4C + 8(17/2) = 73
4C + 68 = 73
4C = 5C = 5/4 = 1.25
 So the cost to rent each chair is $1.25 and the cost to rent each table is $8.50 
7 0
3 years ago
Read 2 more answers
Jennifer has a savings account that earns interest at a rate of 3% per year. Jennifer deposits 1000 into the account. Which of t
Tomtit [17]

The exponential equations represents how long it will take for the account to grow to 1500 is y = 1000(b)^13.72

<h3>Exponential equations</h3>

Exponential equations are inverse of logarithmic equation. The standard exponential equation is expressed as;

y = ab^x

where

a is the base

x is the exponent

b is the rate

If Jennifer has a savings account that earns interest at a rate of 3% per year. Jennifer deposits 1000 into the account, the resulting exponential equation will be:

y = 1000(1.03)^x

If y = 1500, find the value of x

1500 = 1000(1.03)^x
1.5 = 1.03^x

ln1.5 = xln1.03
x = ln1.5/ln1.03

x = 13.72

Substitute to determine the equation

y = 1000(b)^13.72

Hence the exponential equations represents how long it will take for the account to grow to 1500 is y = 1000(b)^13.72

Learn more on exponential equation here: brainly.com/question/2456547

#SPJ1

4 0
2 years ago
Need help w this question thanksss!
elena55 [62]

Given:

A figure of a circle.

To find:

The value of x.

Solution:

Central angle theorem: According to this theorem, the central angle on an arc is twice of the subtended angle on that arc.

Using the central angle theorem, we get

x=2\times 35^\circ

x=70^\circ

Therefore, the value of x is 70 degrees.

4 0
3 years ago
Find an equivalent ratio for 22/55 and then write the proportion
lutik1710 [3]
\frac{22}{55} = \frac{2}{5} = .4
7 0
3 years ago
Read 2 more answers
Answer please ASAP!!!!!!
weqwewe [10]
<h3>Answer:  282.6 square units</h3>

====================================================

Work Shown:

r = 3 is the radius of the circular base

h = 12 is the height of the cylinder

pi = 3.14 approximately

SA = surface area of the cylinder

SA = 2pi*r^2 + 2pi*r*h

SA = 2*3.14*3^2 + 2*3.14*3*12

SA = 282.6

3 0
3 years ago
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