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3 years ago

When multiplied together, which two polynomials equal ab3+2a2b2? Select the two correct answers.

Mathematics

2 answers:

fomenos3 years ago

5 0

The answer is 2) ab2 that would be ur answer

g100num [7]3 years ago

5 0

Answer:

The Answer to the question would be option 1.) b+2a, and option 2.) ab^2

Step-by-step explanation:

Here is the equations and all that that would be used:

ab2(b+2a)

=(ab2)(b+2a)

=(ab2)(b)+(ab2)(2a)

=ab3+2a2b2

=2a2b2+ab3

With this, we find that multiplying:

ab^2 * (b + 2a), we will arrive at our answer.

Really hope this helps!

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In order to estimate the difference between the average hourly wages of employees of two branches of a department store, the fol

Julli [10]

Answer:

$0.071,1.928$

Step-by-step explanation:

Downtown Store North Mall Store

Sample size n 25 20

Sample mean $\bar{x}$ $9 $8

Sample standard deviation s $2 $1

$n_1=25\\n_2=20$

$\bar{x_1}=9\\ \bar{x_2}=8$

$s_1=2\\s_2=1$

$x_1-x_2=9-8=1$

Standard error of difference of means = $\sqrt{\frac{s_1^2}{n_1}+\frac{s_2^2}{n_2}}$

Standard error of difference of means = $\sqrt{\frac{2^2}{25}+\frac{1^2}{20}}$

Standard error of difference of means = $0.458$

Degree of freedom = $\frac{\sqrt{(\frac{s_1^2}{n_1}+\frac{s_2^2}{n_2}})^2}{\frac{(\frac{s_1^2}{n_1})^2}{n_1-1}+\frac{(\frac{s_2^2}{n_2})^2}{n_2-1}}$

Degree of freedom = $\frac{\sqrt{(\frac{2^2}{25}+\frac{1^2}{20}})^2}{\frac{(\frac{2^2}{25})^2}{25-1}+\frac{(\frac{1^2}{20})^2}{20-1}}$

Degree of freedom =36

So, z value at 95% confidence interval and 36 degree of freedom = 2.0280

Confidence interval = $(x_1-x_2)-z \times SE(x_1-x_2),(x_1-x_2)+z \times SE(x_1-x_2)$

Confidence interval = $1-(2.0280)\times 0.458,1+(2.0280)\times 0.458$

Confidence interval = $0.071,1.928$

Hence Option A is true

Confidence interval is $0.071,1.928$

4 0

3 years ago

What are the meaning of these two in geometry Postulate Theorem

ElenaW [278]

$\large{\underline{\mathtt{\red{a}\pink{n}\green{s}\blue{w}\red{e}\purple{r}}}}$

Postulate:- In geometry postulate is a statement that is assumed or claimed as true. It cannot be proven.

Theorem:- In geometry a theorem is a rule or principle thag can be proven true.

7 0

2 years ago

You lost your cell phone and have to use a phone booth. The call will cost $0.25 for the first minute and

ElenaW [278]

Answer:

4 minutes

Step-by-step explanation:

make equation

0.25+(0.15x)= 0.85

solve for x

0.15x= 0.60

x=4

7 0

3 years ago

Read 2 more answers

Factor completely: y6 - 1.

RUDIKE [14]

Answer:

(y times 6) -1

Step-by-step explanation:

I don't know what to say it is already simplified

7 0

3 years ago

X/2.7 + 3.6=4.8 solve for x

weqwewe [10]

Answer:

3.24

Step-by-step explanation:

1) minus the whole number, 3.6 from both sides:

x/2.7 +3.6 = 4.8 -----> x/2.7 = 1.2

2) multiply both sides by 2.7 to get the x value on its own:

x/2.7 = 1.2 -------> x = 3.24

3) finally x is on its own with a value on the other side... x = 3.24

7 0

2 years ago