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3 years ago

Find the linear that is the best fit for the given data. Round decimals values to the nearest hundredth, if necessary

1 answer:

3 0

The linear least squares regression will have a slope of:

m=(nΣxy-ΣxΣy)/(nΣx^2-ΣxΣx)

m=(5*2078-30*281)/(5*220-30*30)

m=1960/200

m=9.8

and a y-intercept of:

b=(Σy-mΣx)/n

b=(281-9.8*30)/5

b=-2.6

So the line of best fit is:

y=9.8x-2.6

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Charles rolled a number cube labeled from 1 to 6. What is the probability that he will roll a number greater than 2? in a fracti

arlik [135]

Answer:

4/6 or 2/3

Step-by-step explanation:

There are 4 numbers greater than 2 and less than or equal to 6, meaning that to roll a number greater than six, he has a 4/6 chance.

5 0

3 years ago

Read 2 more answers

Ellen has a pencil 2x+15cm long. Tom has a pencil5x+25cm long. How much longer is Tom's pencil than Ellen's?

Pachacha [2.7K]

Answer:

3x + 10cm

Step-by-step explanation:

This is calculated as:

Length of Tom's pencil - Length is Ellen's pencil

Length of Tom's pencil: 5x+25cm long.

Length of Ellen's pencil : 2x+15cm long.

(5x + 25)cm - (2x + 15)cm

5x + 25 - 2x - 15

5x - 2x + 25 - 15

3x + 10 cm

Therefore, Tom's pencil is 3x + 10cm longer is than Ellen's.

8 0

2 years ago

Write a two-column proof. Given: <2 is congruent to <5; Segment AB is congruent to Segment DE Prove: Segment BC is congrue

kotykmax [81]

Answer:

proof

Step-by-step explanation:

Statements

Reasons

<2 is congruent to <5; Segment AB is congruent to Segment DE

Given

<3≅<4

Vertical angle theorem

ΔCDB≅ΔCAE

AAS

Segment BC is congruent to Segment EC

CPCTC

5 0

3 years ago

Which expression is equivalent to y x 48?

Nostrana [21]

Answer: (y*40)+(y*8)

Step-by-step explanation:

7 0

2 years ago

Name the figure below in two different ways.<br> C<br> J<br> b

Irina18 [472]

Based on the letters representing the the given figure, two different ways that it can be named are CJB and BJC.

<h3>What other ways can the figured be named?</h3><h3 />

The figure has the midpoint of J.

This means that when you are naming the figure, J has to be in the middle of either of the names that you choose.

You can therefore name the shape CJB which would mean that C is the starting point and B is the ending point.

Or you could name it BJC with B being the starting and C being the ending.

Rest of the question:

Shape description is that of a line that has three different points which are C, J, and B.

Find out more on naming figures at brainly.com/question/22749241.

#SPJ1

4 0

1 year ago