All categories

3 years ago

Can you write 2x(x-1) as a product and as a sum please? Thank you

Mathematics

2 answers:

kotykmax [81]3 years ago

5 0

Answer: yes you can actually.

Step-by-step explanation:

choli [55]3 years ago

5 0

Answer: The product is 2x^2-2x, and the sum is 3x-1

Step-by-step explanation: Assuming you mean 2x(x-1) and 2x+(x-1) it would be 2x^2-2x for the product, and for the sum it would be 3x-1

You might be interested in

The diameters of aluminum alloy rods produced on an extrusion machine are known to have a standard deviation of 0.0001 in. A ran

Murljashka [212]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The null hypothesis is rejected this means that $\mu \ne 0.5025$

The 95% confidence interval is $0.5045608 < \mu < 0.5046392$

Step-by-step explanation:

From the question we are told that

The standard deviation is s= 0.0001

The sample size is n = 25

The sample mean is $\= x = 0.5046 \ in$

The population mean is $\mu = 0.5025 \ in$

The null hypothesis is $H_o : \mu = 0.5025$

The alternative hypothesis is $H_a : \mu \ne 0.5025$

The test statistics is mathematically represented as

$t = \frac{0.5046 - 0.5025}{ \frac{0.0001}{\sqrt{25} } }$

$t = 105$

So the p-value from the z-table is mathematically represented as

$p-value = 2 * P( z > 105)$

$p-value = 0.000$

seeing that

$p-value < \alpha$ we reject the null hypothesis

The critical value of

$\frac{\alpha }{2}$ obtained from the normal distribution table is

$Z_{\frac{\alpha }{2} } = 1.96$

The margin of error is mathematically represented as

$E = Z_{\frac{\alpha }{2} }*\frac{s}{\sqrt{n} }$

=> $E = 1.96 *\frac{0.0001}{\sqrt{25} }$

=> $E =3.92 *10^{-5}$

The 95% confidence level is mathematically represented as

$\= x - E < \mu < \= x + E$

=> $0.5046 - 3.92 *10^{-5} < \mu < 0.5046 + 3.92 *10^{-5}$

=> $0.5045608 < \mu < 0.5046392$

8 0

3 years ago

What is the definition of data

Studentka2010 [4]

Answer:

facts and statistics collected together for reference or analysis

a piece of information :)

Step-by-step explanation:

5 0

3 years ago

Three minus seventeen= A. Negative B. Positive

krok68 [10]

Answer:

negative -14

Step-by-step explanation:

3 0

4 years ago

Read 2 more answers

In the expressions, x and y represent positive integers.

denpristay [2]

Answer:

Step-by-step explanation:

4 0

3 years ago

Can someone explain this.

natta225 [31]

Answer:

Step-by-step explanation:

Linear functions draw a straight line. This will draw a curve. Linear functions are always in the form y=mx+c and this is not.

6 0

3 years ago