If Samuel sold a watch for $102 and lost $55 on the sale, he bought the watch for $132.​

Answer:

y=2x−1

Explanation:

First, we need to determine the slope of the line. The formula for determining the slope of a line is:

m=y2−y1x2−x1

where m is the slope and the x and y terms are for the points:

(x1,y1) and (x2,y2)

For this problem the slope is:

m=3−−12−0

m=3+12m=42m=2

Now, selecting one of the points we can use the point slope formula to find the equation.

The point slope formula is:

y−y 1=m(x−x1)

Substituting one of our points gives:

y−1=2(x−0)y+1=2x

Solving for y

to put this in standard form gives:

y+1−1=2x−1

y+0=2x−1

y=2x−1

Answer:

12

Step-by-step explanation:

8 times 1.5

Answer:

its b

Step-by-step explanation:

The correlation coefficient of the set of data is 0.9957.

Correlation coefficient measures the strength and direction of the relationship between two variables. Following is the formula to calculate the correlation coefficient -

[tex]$r =\frac{\sum\left(x_{i}-\bar{x}\right)\left(y_{i}-\bar{y}\right)}{\sqrt{\sum\left(x_{i}-\bar{x}\right)^{2} \sum\left(y_{i}-\bar{y}\right)^{2}}}[/tex]

r → correlation coefficient.

[tex]$x_{i}[/tex] → values of the x-variable in a sample.

[tex]$\bar{x}[/tex] → mean of the values of the x-variable.

[tex]$y_{i}[/tex] → values of the y-variable in a sample.

[tex]$\bar{y}[/tex] → mean of the values of the y-variable.

The general equation of a straight line is -

y = mx + c

Other possible equations of lines are -

We have a runner times herself to see how long it takes her to run different distances. The table shows the runner's times (in minutes) for running several distances (in miles) -

Miles -

1  2  3  4  6  8  10  12

Time -

7  16  30  35  57  75  106  132

The calculations are given below -

[X  -  Mₓ]

- 4.750

- 3.750

- 2.750

- 1.750

 0.250

 2.250

 4.250

 6.250

Mₓ = 5.750

[Y  -  My]

- 50.250

- 41.250

- 27.250

- 22.250

- 0.250

 17.750

 48.750

 74.750

My = 57.250

[X  -  Mₓ]²

22.562

14.062

7.562

3.062

0.062

5.062

18.062

39.062

Sum = 109.500

[Y  -  My]²

2525.062

1701.562

742.562

495.062

0.062

315.062

2376.562

5587.562

Sum = 13743.500

(X - Mₓ)(Y - My)

238.688

154.688

74.938

38.938

- 0.062

39.938

207.188

467.188

Sum = 1221.500

Finding [X] - Values -

Finding [Y] - Values -

[X] and [Y] Combined

R Calculation

r = ∑((X - My)(Y - Mₓ)) / √((SSₓ)(SSy))

r = 1221.5 / √((109.5)(13743.5)) = 0.9957

r = 0.9957

Therefore, the correlation coefficient of the set of data is 0.9957.

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Answer:

50 miles i believe

Step-by-step explanation:

Answer:

50 miles

Step-by-step explanation:

Answer:

qwhich one do we answer, 1, 2?????????

Step-by-step explanation:

Answer:

14 I think I'm. it completely sure

Answer:

5

Step-by-step explanation:

you keep the sign of the first number

change the minus sign to addition

and the 7 to a positive

-2 +7

is the same as 7 - 2 if you switch the term

Answer:

14.45 feet

Step-by-step explanation:

The set up is a right angled triangle;

The length of the ladder = hypotenuse = 15foot

The base of the ladder is the adjacent = 4feet

The height of th house is the opposite = x

Using the pythagoras theorem;

hyp² = opp² + adj²

15² = opp²+4²

opp² = 15²- 4²

opp² = 225 - 16

opp² = 209

opp = 14.45feet

Hence the ladder reaches 14.45 feet up the house

Answer:

x = 36

Step-by-step explanation:

Given

[tex]\sqrt{x+13}[/tex] = 7 ( square both sides )

([tex]\sqrt{x+13}[/tex] )² = 7²

x + 13 = 49 ( subtract 13 from both sides )

x = 36

[tex]\sqrt{x+13}=7\\[/tex]

To solve the radical equation, completing the square all whole equation.

[tex](\sqrt{x+13})^2=7^2\\[/tex]

As defined, [tex](\sqrt{x})^2 =|x|[/tex]

Therefore, [tex](\sqrt{x+13})^2=|x+13|=x+13[/tex]  (Although Absolute Function gives 2 conditions, however - domain of radical function must be greater than or equal to 0. Meaning x < 0 for another condition doesn't apply.)

[tex]x+13=49\\x=49-13[/tex]

Move 13 to subtract.

[tex]x=36[/tex]

Therefore, the answer is x = 36.

Answer:

THe y intercept  is 30 and it represents the registration fee

Step-by-step explanation:

Answer:

11

Step-by-step explanation:

if the two triangles are similar, that means that they are proportional to each other.

If you look at how they are shaped, they look the same, just one is smaller.

When you compare the two, you see that on triangle EFU, side EU corresponds with side VU on triangle VWU

EU = 7 and VU = 35

now divide so see what the multiplying factor is

35/7 = 5

so, when you divide the values on triangle VWU by 5, you get the values for  triangle EFU

35/5 = 7

side UW corresponds with side UF

UW = 55 and UF = ?

55/5 = 11

Side UF = 11

Answer:

y = 2/3x+3

Step-by-step explanation:

-2x+3y=6

you add 2x to the other side 3y=2x+6

and divide by 3

y = 2/3x+2

Answer:

Explanatory Variable is the right answer it is the variaable being manipulated and observed.

Step-by-step explanation:

Sorry but I don't see any pictureessss--

What am I supposed to be answering??

Welp-

Sawarasenai kimi wa shoujo na no?~

Answer:

cveryc

Step-by-step explanation:

ITS C im good11123

Answer:

c

Step-by-step explanation:

Answer:

2 hours

Step-by-step explanation:

50 metres / 4 hours = 25 metres / x hours

cross multiply both sides

50x = 25(4)

50x = 100

divide 50 both side

x = 100/50

x = 2 hours

Answer:

Answer is 948 miles.

Step-by-step explanation:

distance in inches is 4 inches on map

1 inch = 237 miles

4*237=948  

948 is the actual distance between north Carolina and Louisiana

Answer: my answer for dat will be sin 16 degrees

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

Answer:

0 or 5/12

Step-by-step explanation:

with everything subtracted its 0 but with only subtracting 1/6 its 5/12

Answer:

-6(3a + 5)

Step-by-step explanation:

Factoring -6 from 18a, you will be left with 3a because -6× 3a will give you 18a

Also factoring -6 from 30, you will be left with 5 because -6 ×5 = -30.

so  -18a -30

-6( 3a + 5)

Answer:

m=[tex]\frac{3}{4}[/tex]

Step-by-step explanation:

Answer: 1/4 (0.25)

I hope this helps, and Happy Holidays! :)

Answer:

203,549 !!!

Step-by-step explanation:

Answer: it 2790

Step-by-step explanation:

The value of 5,860÷2.1 is 2790.

In easy phrases, the division may be described because of the splitting of a massive institution into smaller companies such that every institution may have the same number of items. it's far an operation used for identical grouping and the same sharing in math.

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Answer:

D.-24

Step-by-step explanation: