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zalisa [80]
2 years ago
9

4. Calculate Karl Pearson's Coefficient of Correlation X 43 44 46 40 44 42 45 42 38 40 42 57. Y 29 31 19 18 19 27 27 29 41 30 26

10​
Mathematics
1 answer:
larisa86 [58]2 years ago
6 0

Answer:

Enter the following transactions into richard’s checkbook register and state his ending balance: date type description amount 03/01 check #204 blue sky apartments $455. 00 03/05 dep payroll automatic deposit $390. 36 03/08 debit benny’s hamburgers and fries $9. 20 03/15 check #205 car payment $251. 59 03/19 dep payroll automatic deposit $390. 36 a. $715. 79 b. $1,009. 81 c. $780. 72 d. $880. 24.

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This is so important please help
Shtirlitz [24]

Given:

The center of the circle = (-1,0)

Point on the circle = (2,-4).

To find:

The equation of the circle.

Solution:

Distance between two points is

d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

Distance between the center (-1,0) and the point on the circle (2,-4) is the radius of the circle.

r=\sqrt{(2-(-1))^2+(-4-0)^2}

r=\sqrt{(2+1)^2+(-4)^2}

r=\sqrt{(3)^2+(-4)^2}

On further simplification, we get

r=\sqrt{9+16}

r=\sqrt{25}

r=5

Now, the equation of the circle is

(x-h)^2+(y-k)^2=r^2

Where, (h,k) is the center and r is the radius of the circle.

The radius of the circle is 5 and the center is at (-1,0), so the equation of the circle is

(x-(-1))^2+(y-0)^2=5^2

(x+1)^2+y^2=25

Therefore, the first option is correct, i.e., (x+1)^2+y^2=25.

3 0
2 years ago
Solve. 12 – (2 × 3) A. 6 B. 12 C. 12(2) D. 23
atroni [7]
12-\bigg(2*3\bigg) \\  \\ 12 -6  \\  \\ \boxed{\boxed{\boxed{\pmb{=6}}}}
4 0
3 years ago
HELP!! Please answer 9 and ten with solution needed!!
sashaice [31]

Answer:

m=7 z=-12

Step-by-step explanation:

expand brackets:

8m+24=5m+45

Change sides:

8m-5m=45-24

3m=21

<u>m=7</u>

<u />

<u>z-6</u>    =  <u>3</u>

2z         4

Coss multiply:

4z-24=6z

4z-6z=24

-2z=24

Divide both sides by -2:

z=-12

4 0
2 years ago
A number decreased by the total of the number and fourteen
Charra [1.4K]

The answer to this would be x-(x+14)

Here's an explanation:

Let x represent the unknown number. The problem says that x has been decreased by the sum of x and 14. So, to put this in a form of an equation, it would be x-(x+14), since you have to do the addition first before you can subtract the two number since you don't know what x is. This equation is equal to -14 no matter what x is.

4 0
3 years ago
When combining like terms what is 8m - 10m?
Bogdan [553]

Answer:

-2m

Step-by-step explanation:

Since the numbers will go below 0 we have to make it in negative numbers

8 0
3 years ago
Read 2 more answers
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