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1 year ago

Hello can you please help me with one or two please

Mathematics

1 answer:

Zolol [24]1 year ago

6 0

For question number 2, the answer is A 6x+9

Explanation:

$\begin{gathered} 3(2x+3) \\ \text{Clearing the brackets, we get} \\ 6x+9 \end{gathered}$

Question Number 19:

$\begin{gathered} 8x-2x+4 \\ 6x+4 \\ \text{Factorizing, we get} \\ 2(3x+2) \end{gathered}$

So, the correct answer for question number 19 is 6x + 4.

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the monthly salary of a married couple is rs 405000plua a festival expenses of 30000calculate the income tax paid by the couple

Valentin [98]

The income tax for the married couples under filing a joint return receives a standard deduction of $25,100.

<h3>What is an income tax?</h3>

An income tax is a type of tax that governments impose on income generated by businesses and individuals within their jurisdiction.

In this case, the income tax for the married couples filing a joint return receives a standard deduction of $25,100

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2 years ago

Find the value of y.

raketka [301]

Answer:

y= <u>9x+55</u>

Step-by-step explanation:

if 9x+42=4y-13

9x+42+13=4y

y= <u>9x+55</u>

4 0

3 years ago

Content attribution

Leto [7]

Answer:

12 and 6

Step-by-step explanation:

12 x 6=72

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3 years ago

Describe how (2^3) (2^-4)can be simplified.

SVETLANKA909090 [29]

HELLO kIDDIO!

The bases will stay the same but you will have to add the exponents to simplify.

Have a nice day

4 0

3 years ago

Read 2 more answers

Explain how to perform a two-sample z-test for the difference between two population means using independent samples with

Effectus [21]

Answer:

Z= (X1`-X2`)- (u1-u2)/ $\sqrt{ \frac{ s_1^2}{n_1^2} +\frac{ s_2^2}{n_2}$ (here s1=σ1 and s2= σ2)

Step-by-step explanation:

Let X1` be the mean of the first random sample of size n1 from a normal population with a mean u1 and known standard deviation σ1.Let X2` be the mean of the second random sample of size n2 from another normal population with a mean u2 and known standard deviation σ2. Then the sampling distribution of the difference X1`-X2` is normally distributed with a mean of u1-u2 and a standard deviation of

$\sqrt{ \frac{ s_1^2}{n_1^2} +\frac{ s_2^2}{n_2}$ . (here s1=σ1 and s2= σ2) In other words the variable

Z= (X1`-X2`)- (u1-u2)/ $\sqrt{ \frac{ s_1^2}{n_1^2} +\frac{ s_2^2}{n_2}$ (here s1=σ1 and s2= σ2)

is exactly standard normal no matter how small sample sizes are . Hence it is used as a test statistic for testing hypotheses about the difference between two population means.

The procedure is stated below.

1) Formulate the null and alternative hypotheses.

2) Decide on significance level ∝

3) Use the test statistic Z= (X1`-X2`)- (u1-u2)/ $\sqrt{ \frac{ s_1^2}{n_1^2} +\frac{ s_2^2}{n_2}$ (here s1=σ1 and s2= σ2)

4) Find the rejection region

5)Compute the value of Z from the sample data

6) Rehect H0 if Z falls in the critical region, accept H0 , otherwise.

6 0

3 years ago