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1 year ago

PHOTO ATTACHED PLEASEEEE HELPPPP!!!!!!!!!!

Mathematics

1 answer:

Thepotemich [5.8K]1 year ago

6 0

Answer:

15x^2-3x-1

Step-by-step explanation:

All we have to do is collect like terms and calculate! Hope this helps!

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PLEASE HURRRYYY Simplify <br> √x2 (2 means squared)

Maslowich

Answer:

$\sqrt{x ^{2} } \\ { = ( {x}^{2} )}^{ \frac{1}{2} } \\ = {x}^{ \frac{2}{2} } = {x}^{1} \\ = { \boxed{ \boxed{x}}}$

7 0

2 years ago

The numbers of regular season wins for 10 football teams in a given season are given below. Determine the range, mean, variance,

tensa zangetsu [6.8K]

We have the following data set:

2,7,15,3,12,9,15,8,3,10

The range is the difference between the highest and lowest values in the set, to find the range, order the data set from least to greatest.

2,3,3,7,8,9,10,12,15,15

Then,

$\begin{gathered} \text{Range}=15-2 \\ \text{Range}=13 \end{gathered}$

Mean is represented by the following expression:

$\text{Mean}=\frac{\text{Sum of all data points}}{Number\text{ of data po}ints}$ $\text{Mean}=\frac{84}{10}=8.4$

Population variance formula looks like this:

$\begin{gathered} \sigma^2=\frac{\sum^{}_{}(x-\mu)^2}{N} \\ \text{where,} \\ \sigma^2=\text{population variance} \\ \sum ^{}_{}=addition\text{ of} \\ x=\text{each value} \\ \mu=population\text{ mean} \\ N=\text{ number of values in the population} \end{gathered}$

Then, substituting:

$\begin{gathered} \sigma^2=\frac{(2-14)^2+(3-14)^2+\cdots+(15-14)^2}{10} \\ \sigma^2=20.44 \end{gathered}$

For the standard deviation:

$\begin{gathered} s=\sqrt[]{\frac{\sum ^{}_{}(x-\mu)^2}{N}} \\ s=4.521 \end{gathered}$

5 0

11 months ago

I need help on this question plz and thanku

77julia77 [94]

Answer:

42 cm cubed

Step-by-step explanation:

6x4x4 to find volume of 96 when it is filled.

3x3x6 = 54 to find out what is cut out.

96-54 = 42 cm cubed.

5 0

2 years ago

A number written in the form a + bi is called a _____ number.

Amiraneli [1.4K]

Answer: A. Complex

Step-by-step explanation: hope this helps!

6 0

2 years ago

Three cube-shaped boxes are stacked one above the other. The volumes of two of the boxes are 729 cubic meters each, and the volu

Grace [21]

Answer:

Step-by-step explanation:

8 0

2 years ago