Pls help me with this…

Mathematics

1 answer:

Paladinen [302]2 years ago

5 0

3
The answer is 3
The answer is 3

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7-x + 2x if y=6 solve'

Zigmanuir [339]

Assuming the ‘y’ is supposed to be x,

7 - x + 2x

7 - 6 + 2(6)

7 - 6 + 12

1 + 12

= 13

4 0

2 years ago

Read 2 more answers

BRAINLIEST ASAP! PLEASE HELP ME :)

aleksandrvk [35]

Answer:

Two

Step-by-step explanation:

The table is saying that, if Sandra swam enough races, she should expect to get 20 firsts, 12 seconds, 6 thirds, and two no placements.

Her expected value of points will be the average (mean) of all the points awarded for each race.

The average is the total number of points divided by the number of races.

$\begin{array}{cccl}\textbf{Points} & & \textbf{Total}\\\textbf{Awarded} & \textbf{Frequency} & \textbf{Points}\\3 & 20 & 60\\2 & 12 & 24\\1 & 6 & 6\\0 & 2 & 0\\\textbf{TOTAL} & \mathbf{40} & \mathbf{90}\\\end{array}$

The simulation says that, if she swam 40 races, she should expect to earn a total of 90 points.

$\text{Average} = \dfrac{\text{Total points}}{\text{Number of races }} = \dfrac{\text{90}}{\text{40}} =\textbf{2.25 points/race}$

She can't win a fraction of a point, so she can expect to win two points in her first race.

5 0

3 years ago

What is a stem and leaf plot? How is it used and how exactly do i solve one? (an example would be great)

Ludmilka [50]

A stem and leaf plot is a table where each of the data is divided into two parts. The stem, that is the first digit and the leaf is the last digits. Let's say that we have the following set of data.

$10,\text{ 12, 25, 28, 29, 35, 38, 40, 44}$

If we want to make a stem and leaf plot of that data, we first write a column where we place the first digit of each number without repetition, like this: