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2 years ago

Simplify this expression 7x+ 5(x+3)+4x+x+2

Mathematics

2 answers:

Vika [28.1K]2 years ago

4 0

15x+13 is the answer for your problem

tresset_1 [31]2 years ago

3 0

17x+17
Can I not show work it’s a hassle to type all of it in

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If the standard deviation of a set of data is zero, what can you conclude about the set of values? The sum of the deviations fro

Rashid [163]

Answer:

All values are identical.

Step-by-step explanation:

We are given the following in the question:

If the standard deviation of a set of data is zero.

Then, all the values in data are identical.

This can be shown as:

Let all the terms in data be x.

Formula:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{nx}{n} = x$

Sum of squares of differences =

$\displaystyle\sum (x_i - x)^2 = 0$

$\sigma = \sqrt{\frac{0}{n}} = 0$

Thus, the correct answer is

All values are identical.

3 0

3 years ago

8x+4y=-2<br> -12x+5y=-8<br> What is the answer

tester [92]

Answer:

x= 1/4 .....................

y=-1

7 0

2 years ago

For what values of does the equation (2 + 1)^2 + 2 = 10 − 6 have two real and equal roots?

adelina 88 [10]

Answer:

(2 + 1)^2 + 2 = 10 - 6

Falso

Step-by-step explanation:

The left side

does not equal to the right side

, which means that the given statement is false.

False

4 0

2 years ago

Please i need help i will mark you brill

Furkat [3]

Answer:

the answer to your question is

2n + 20

4 0

2 years ago

Read 2 more answers

What is 10% of 1/4 please help and explain

makvit [3.9K]

10/100=0.1
1/4=0.25
0.1*0.25=0.025

5 0

2 years ago

Read 2 more answers