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blondinia [14]
3 years ago
15

Adam has the scatterplot shown for his data set, where snowfall is measured in inches, and he is trying to describe the line of

best fit. Which choice correctly describes the line of best fit?
Mathematics
1 answer:
Ivanshal [37]3 years ago
8 0

Answer:

The best fit line is a regression line explaining relationship between dependent & independent variables, minimising the residual differences between observed values & actual values of dependent variable.

Step-by-step explanation:

Regression is a statistical process that explains relationship between dependent variable & independent variable(s). Scatter plot depicts the regression relationship between the variables in a graphical form.

Scatterplot showing snowfall measured in inches : is a graphical depiction of - regression relationship between snowfall as a dependent variable with its explanatory (independent) variables ; like temperature, humidity , other climate & weather factors etc.

The line of best fit would be a regression line (scatterplot), which describes the relationship of snowfall with its above mentioned explanatory variables, in such a way that the estimated value of snowfall is closest possible tothe actual values of snowfall (i.e their difference is minimum).

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A bag contains six red marbles three blue marbles and five green marble the three marbles are drawn out of the bag what is the p
tia_tia [17]

Answer:

Step-by-step explanation:

Red = 6

Blue = 3

Green = 5

Total = 14

First marble = 6/14  = 3/7  You now have 5 reds and 13 total

Second Marble = 5 * 13  which brings you down to 4 red and 12 total.

Third Marble = 4/12 = 1/3

Result

P(3 Red) = 3/7 * 5/13 * 1/3     cancel the 3s

P(3 Red) = 1/7 * 5/13

P(3 Red) = 5/91

P(3 Red) = 0.0549 . Rounding to the nearest 1/100 depends on what you have been told about rounding. I would say the answer is 0.05 but your teacher may say something different.

8 0
3 years ago
An hourglass consists of two sets of congruent composite figures on either end. Each composite figure is made up of a cone and a
belka [17]
Answer: third option 268.8

Explanation:

For this kind of proble it is very important that you attach the figure because it contains important information to understand the question.

I have attached the figure for better understanding.

1) The top portion (and the bottom is congruent but rotated 180°) of the hourglass is a figure equivalent to a cylinder on top and a cone on bottom.

So the total volume contained in the top portion is the volume of a cylinder + the volume of a cone.

This is how you calculate the volume of the top portion:

1) The height of the cylinder is 54 mm - 18 mm = 36 mm

2) The formula for the volume of a cylinder is V = π (radius)^2 * height

radius = 8 mm
height = 36 mm

=> V = π(8mm)^2 * 36 mm = 2304π (mm)^3

3) The formula for the volume of a cone is V = (1/3)π(radius)^2 * height

radius = 8 mm
height = 18 mm

V = (1/3)π(8mm)^2 * 18 mm = 384π (mm)^3

4) The total volume of the top portion is volumen of the cylindrical part + voume of the cone:

Total voluem = 2304π (mm)^3 + 384π (mm)^3 = 2688π (mm)^3

5) To find the number of seconds <span>it take until all of the sand has dripped to the bottom of the hourglass you have to divide the total volumen of sand by the rate:

time in seconds = total volume of sand / rate of dripping

time in seconds = [2688 π (mm)^3 ] / [10π (mm)^3 / s] = 268.8 s

That is the answer: 268.8 s
</span>

4 0
3 years ago
Read 2 more answers
Jim types 1800 words in 25 minutes. How many words does he type per minute
kirill [66]
1800 divided by 25 is 72. He types 72 words per minute.
3 0
3 years ago
I need help with this question. i dont seem to understand how to solve it
ioda
Im pretty sure you need to divide 155 by 4 or 48. try it and see what you get. then ask your teacher if you did it right. always ask questions.
6 0
3 years ago
What type of triangle is this?
Dominik [7]

Answer:

rectagular

Step-by-step explanation:

7 0
3 years ago
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