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3 years ago

HEY YALL CAN U HELP PLZ THANK U

Mathematics

1 answer:

maria [59]3 years ago

7 0

Answer: D. 2

Step-by-step explanation:

Given

y-1=2(x--2)

Change signs

y-1=2(x+2)

Expand parenthesis

y-1=2x+4

Add 1 on both sides to isolate "y"

y-1+1=2x+4+1

y=2x+4

So the slope is 2

Hope this helps!! :)

Please let me know if you have any questions

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HELP ASAP!!!!! 25 POINTS!!!!!!!! AND WILL GVE BRAINLIEST!!!!!!!!!

Volgvan

• Im sorry but we doesnt know the x number :( but dont worry to plot the diagram:

- substitute the number x (given) into the equation f(x)

- example: f(x) = x + 9 / x - 3

- then x given is 4

- therefore, f(x) = (4) + 9 / (4) - 3

- f(x) = 13 / 1 or 13

- then you plot at 13 on the graph :)

hope this helps ;/

7 0

3 years ago

Your friend Phil, asks you what you think about a new scratch-off lottery game. It costs $10 to play this game, There are two ou

weqwewe [10]

Answer: I am going to put a link

maybe its going to help you?

Step-by-step explanation:

http://s3.amazonaws.com/illustrativemathematics/illustration_pdfs/000/001/217/original/illustrative_mathematics_1217.pdf?1390751150

7 0

3 years ago

Data were collected from a typing class with 45 students. The class had an average of 56 words per minute (WPM) with a standard

STALIN [3.7K]

Answer:

Standard deviation gets smaller

Step-by-step explanation:

No. of students = 45

The class had an average of 56 words per minute (WPM) with a standard deviation of 7 WPM.

$Mean = \frac{\text{Sum of all observations}}{\text{No. of observations}}\\56=\frac{Sum}{45}\\56 \times 45=Sum\\2520=Sum$

The teacher realized that the data from one student who typed 55 WPM was not entered.

So, new sum = 2520+55

New sum =2575

So, new mean = $\frac{2575}{45}$

New mean =57.22

Standard deviation is the measure of distance between observation and mean

So, if number gets closer to mean , Standard deviation gets smaller . if the numbers get bigger , Standard deviation gets bigger.

Since 55 is closer to 57.22

So, Standard deviation gets smaller

4 0

3 years ago

What is the price per pound if the can is 2 7/8 pounds and the price is $1.38

Lerok [7]

Answer:

$2.08

Step-by-step explanation:

2 7/8= 23/8 divided 1.38

7 0

3 years ago

Someone help please!!!

Vikentia [17]

90 degrees because you go straight down as if it was 1 angle

7 0

3 years ago