Combine like terms to create an equivalent expression<br> 3x²+5y²-x^2+2y^2-4

Enter below an equation that describes the hanger:

Murljashka [212]

Answer:

I think it's 7=2x+3

Step-by-step explanation:

The diagram shows a balanced set of 2 sides, meaning that both sides equal each other. I assume you don't know what x is, so the simplest you can do to combine all three parts of the left side of the diagram is 2x+3, which of course equals 7, the right side.

I'm not the best at explaining, but I hope that helps.

8 0

3 years ago

To test if the mean IQ of employees in an organization is greater than 100, a sample of 30 employees is taken and the value of t

ivolga24 [154]

Answer:

$p_v =P(t_{(29)}>1.42)=0.0831$

For this case the p value calculated is higher than the significance level used of 0.05 so then we have enough evidence to FAIL to reject the null hypothesis and the best conclusion for this case would be:

a) do not reject the null hypothesis and conclude that the mean IQ is not greater than 100

Step-by-step explanation:

Information given

We want to verify if he mean IQ of employees in an organization is greater than 100 , the system of hypothesis would be:

Null hypothesis: $\mu \leq 100$

Alternative hypothesis: $\mu > 100$

The statistic for this case is given by:

$t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}$ (1)

The statistic calculated for this case $t_{calc}= 1.42$

The degrees of freedom are given by:

$df=n-1=30-1=29$

Now we can find the p value using tha laternative hypothesis and we got:

$p_v =P(t_{(29)}>1.42)=0.0831$

For this case the p value calculated is higher than the significance level used of 0.05 so then we have enough evidence to FAIL to reject the null hypothesis and the best conclusion for this case would be:

a) do not reject the null hypothesis and conclude that the mean IQ is not greater than 100

5 0

3 years ago

|-4b-8|+|-1-b^2|+2b^3; b=-2

ella [17]

The answer would be -11.
Hope this helps :)

6 0

3 years ago

Ms. Palma is baking a cake. She used 2 3/4 cups of flour to make the cake. She used 1 1/2 of flour to bake the cookies. How many

avanturin [10]

Answer: There are $3\dfrac{3}{2}\ cups$ of flour she would use altogether.

Step-by-step explanation:

Since we have given that

Amount used by her to make the cake = $2\dfrac{3}{4}=\dfrac{11}{4}$

Amount used to bake the cookies = $1\dfrac{1}{2}=\dfrac{3}{2}$

So, the number of cups of flour is given by

$\dfrac{11}{4}\div \dfrac{3}{2}\\\\=\dfrac{11}{4}\times \dfrac{2}{3}\\\\=\dfrac{11}{2\times 3}\\\\=\dfrac{11}{3}\\\\=3\dfrac{2}{3}$

Hence, there are $3\dfrac{3}{2}\ cups$ of flour she would use altogether.

5 0

3 years ago

Bobby catches 8 passes in 3 football at this rate how many passes does he catch in 15 games

nataly862011 [7]

Answer:

40 passes

Step-by-step explanation:

Let the number of passes caught in 15 games be A

Given

Bobby catches 8 passes in 3 football games

That’s

8 passes = 3 games

How many passes does he catch in 15 games at the same rate

That’s

A passes = 15 games

We now have

8 passes = 3 games

A passes = 15 games

Cross multiply

A x 3 = 8 x 15

3A = 120

Divide both sides by 3

3A/3 = 120/3

A = 40

At the same rate,Bobby will catch 40 passes in 15 games

7 0

3 years ago

Combine like terms to create an equivalent expression 3x²+5y²-x^2+2y^2-4