Need help again...<br> :(

A pet food company wants to know the number of pets owned by adults ages 21 to 70. The frequency table shows the data from a sim

Brut [27]

Thank you for posting your question here. I think the question is "
<span>What is the estimated mean for the population? Explain your answer and show your work."

Below is the solution. I hope it helps.

</span>µ= (1*248 +2*567 +3*1402 +4*728 +5*419 +6*456 +7*203)/(1 +2 +3 +4 +5 +6 +7)
<span>=14752/28≈ 526.9</span>

6 0

3 years ago

What does (<img src="https://tex.z-dn.net/?f=%28x%5E%7B2%7D%2B4x%29%28x%29" id="TexFormula1" title="(x^{2}+4x)(x)" alt="(x^{2}+4

eimsori [14]

the first definition of an element was made by

4 0

3 years ago

What is 4(5n-7)=10n+2?variables on both sides

forsale [732]

Example:

About "Solving equations with variables on both sides"

Solving equations with variables on both sides :

To solve equations with variables on both sides, we have to bring the variables to the left side of equal sign and the numbers which or not having the variables, that is constants to the right side of equal sign.

Solving Equations with Variables on Both Sides - Steps

Step 1 :

Use the Distributive Property to remove the grouping symbols.

Step 2 :

Simplify the expressions on each side of the equals sign.

Step 3 :

Use the Addition and/or Subtraction Properties of Equality to get the variables on one side of the equals sign and the numbers without variables on the other side of the equals sign.

Step 4 :

Simplify the expressions on each side of the equals sign.

Step 5 :

Use the Multiplication or Division Property of Equality to solve.

If the solution results in a false statement, there is no solution of the equation.

If the solution results in an identity, the solution is all numbers.

Solving Equations with Variables on Both Sides -Examples

Example 1 :

Solve the following equation. Then check the solution.

5t - 9 = -3t + 7

Solution :

5t - 9 = -3t + 7

In order to get rid of -3t, we have to add 3t on both sides.

5t + 3t - 9 = -3t + 3t + 7

8t - 9 = 7

In order to get rid of -9, add 9 on both sides

8t - 9 + 9 = 7 + 9

8t = 16

Divide by 8 on both sides

8t/8 = 16/8

t = 2

Hope this helps you understand better!

(It is not the answer but it is an example so hope this helps and please give me Brainliest)

3 0

4 years ago

What are the factors of 2x2 3x – 54? Select two options. 2x – 9 2x – 6 2x 6 x – 6 x 6.

Makovka662 [10]

The factors of expression $2x^{2} +3x-54$ are (x+6) and (2x-9).

The given expression is: $2x^{2} +3x-54$

<h3>What is a factor?</h3>

A factor is a number that divides another number leaving no remainder.

We can rewrite the given expression as:

$2x^{2} +12x-9x-54$ (middle term has been splitted)

Take 2 as common from first two terms while take -9 as common from last two terms.

$2x(x+6)-9(x+6)$

Take (x+6) as common

$(x+6) (2x-9)$

So, we got the factors (x+6) and (2x-9)

Therefore, The factors of expression $2x^{2} +3x-54$ are (x+6) and (2x-9).

To get more about factors visit:

brainly.com/question/25829061

4 0

2 years ago

SHOW ALL WORK. <br><br>PLEASE HELP THIS DUE AT MIDNIGHT

MatroZZZ [7]

In the first question,
Total no. of classmates(asked by Theresa for vote)=n= 100
no. of classmates who say yes= 62
proportion= p = 62/100 = 0.62
To find the 95% confidence interval use the formula,
$( p- z_{ \alpha /2} \sqrt{ \frac{p(1-p)}{n} } , p+z_{ \alpha /2} \sqrt{ \frac{p(1-p)}{n} })$

here,
1-α=95%
1-α=0.95
α(significance level)=0.05
α/2= 0.025
From statistics table,
At α/2=0.025 z value is 1.96

By putting the values in above equation,
$( 0.62- (1.96) \sqrt{ \frac{0.62(1-0.62)}{100} } ,0.62+(1.96) \sqrt{ \frac{0.62(1-0.62)}{100} }$
=(0.5249, 0.715)

In the second question,
Total no. of highways=n= 125
no. of highways need to be repair= 75
proportion= p = 75/125 = 0.6
To find the 99% confidence interval use the formula,
$( p- z_{ \alpha /2} \sqrt{ \frac{p(1-p)}{n} } , p+z_{ \alpha /2} \sqrt{ \frac{p(1-p)}{n} })$

here,
1-α=99%
1-α=0.99
α(significance level)=0.01
α/2= 0.005
From statistics table,
At α/2=0.005 z value is 2.576

By putting the values in above equation,
$( 0.6- (2.576) \sqrt{ \frac{0.6(1-0.6)}{125} } ,0.6+(2.576) \sqrt{ \frac{0.6(1-0.6)}{125} }$
=(0.4871, 0.7129)

5 0

3 years ago

Need help again... :(