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Simplify the following expression.
11x^2+9–2x–8x^2 - 6x

Answers

Answer 1

Answer:

Answer:

3x^2-8x+9

Step-by-step explanation:

11x2+9−2x−8x2−6x

Subtract 8x2 from 11x2.

3x2+9−2x−6x

Subtract 6x from −2x.

3x2+9−8x

Move 9.

3x^2−8x+9

Hope this helps! :) Plz mark as brainliest

Answer 2

Answer:

Answer: 3x^2-8x+9

Step-by-step explanation:

11x2+9−2x−8x2−6x

Subtract 8x2 from 11x2.

3x2+9−2x−6x

Subtract 6x from −2x.

3x2+9−8x

Move 9.

3x^2−8x+9

Thank you :)

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This year, a small business had a total revenue of $81,900 . If this is 26% more than their total revenue the previous year, what was their total revenue the previous year?

Answers

Answer:

total revenue was $65,000

Step-by-step explanation:

A small business had a total revenue this year = $81,900

This is 26% more than their total revenue the previous year.

Let the revenue of previous year be 'r'.

r + ( 26% of r ) = $81,900

r + ( 0.26r ) = 81,900

1.26r = 81,900

r = $(81,900)/(1.26)$

r = 65,000

Their total revenue was $65,000 the previous year.

$65000 was the total revenue for the previous year.
65000 x .26 = 16900
65000 + 16900 = 81,900

What is the GCF & LCM of 8 and 44

Answers

Answer: 44

Step-by-step explanation:

A random sample of 10 subjects have weights with a standard deviation of 11.9407 kg. What is the variance of their weights? Be sure to include the appropriate units with the result. The variance of the sample data is nothing ▼ kg cubed . kg squared . kg. (Round to four decimal places as needed.)

Answers

Answer: $142.58\text{squared kg}[$

Step-by-step explanation:

Answer:

Step-by-step explanation:

Given : A random sample of 10 subjects have weights with a standard deviation of 11.9407 kg

i.e. $\sigma = 11.9407$

Since we know that the value of variance is the square of standard deviation.

i.e. $\text{Variance}=\sigma^2$

Therefore, to find the value of variance, we need to find the square of the given standard deviation.

i.e. $\text{Variance}=(11.9407)^2=142.58031649\approx142.58\text{squared kg}$

Thus, the variance of their weights = $142.58\text{squared kg}[$

Question 8 of 10 What is the solution to the following equation? X2 + 5x + 7 = 0

Answers

Answer:

Step-by-step explanation:

Do phone surveys provide adequate coverage of households with respect to one particular parameter? The parameter is the proportion of households without children. If telephone surveys provide adequate coverage of households, then p , the proportion of households without children in the set of all future samples reached by phone, must be equal to the proportion of households without children in the population of all households. Suppose that Thomas, a market analyst, contacts a simple random sample of 300 households as part of a national telephone survey. Of the households contacted, 129 households, or 43 %, have no children and 57 % have at least one child. The most recent census indicates that 48 % of all households have no children and 52 % have at least one child.

Answers

Complete Question

The complete question is shown on the first uploaded image

Answer:

Based on the result of his test , Thomas should fail to reject null hypothesis at a significance level of 0.01. Thomas sufficient evidence to conclude that the proportion of households without children in the set of all future samples reached by phone is not equal to the proportion of households without children in the population of all households.

Step-by-step explanation:

From the question we see that the p-value is greater than the level of significance (0.01 )so we fail to reject the null hypothesis.

This means that Thomas has sufficient evidence to conclude that the proportion of households without children in the set of all future samples reached by phone is not equal to the proportion of households without children in the population of all households.

WHAT IS THE SLOPE OF THE LINE6X + 3Y = 18?
Can anyone actually help me work it out please

Answers

Answer:

$6x + 3y = 18 \n \n y = - 2x + 6 \n \n x = 3$

3y=6x=18 the equation must look like this y=mx+b where m is the slope in this case it is 2 and b is the y-intercept 18 hope it helps

just divide every term by 3 to isolate y

$GraceRosalia$

Simplify the following expression.11x^2+9–2x–8x^2 - 6x

Answers

Answer: 3x^2-8x+9

Step-by-step explanation:

Thank you :)

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Simplify the following expression.
11x^2+9–2x–8x^2 - 6x