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olga nikolaevna [1]

3 years ago

11

Someone help me please !!!

2 answers:

Bezzdna [24]3 years ago

5 0

Y= (-x-6)/2. First you have to isolate Y by itself, in order to do this you need to manipulate the equation by subtracting x from both sides, which eliminates x from the left side, then you would divide both the left and the right side by 2 in order to change the 2y into just y

Andre45 [30]3 years ago

4 0

It's the third one. It is the correct option.

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Five whole numbers are written in order

xenn [34]

Answer:

The values of x and y is given by the equation $4x-y=20+y$ .

Step-by-step explanation:

Given : Five whole numbers are written in order 4 6 x y 10 , the mean and median of the five numbers are the same.

To find : The values of x and y ?

Solution :

Observations 4, 6, x, y, 10.

Mean is summation of observation divided by number of observation.

i.e. $m=\frac{\sum x_n}{n}$

$m=\frac{4+6+x+y+10}{5}$

$m=\frac{20+x+y}{5}$

Median is middle term of observations.

Median of odd terms $M=\frac{n+1}{2}^{th}$ term

$M=\frac{5+1}{2}^{th}$

$M=3^{rd}$ term

$M=x$

The mean and median of the five numbers are the same.

i.e. $\frac{20+x+y}{5}=x$

$20+x+y=5x$

$4x-y=20+y$

The values of x and y is given by the equation $4x-y=20+y$ .

5 0

3 years ago

Read 2 more answers

Freddie needs to buy 3 dozen cookies for a party. The first 20 cookies cost $0.27 each. The rest cost $0.17 each.

yarga [219]

Answer:

8.12 is the answer

Step-by-step explanation:

He needs 36 cookies.

First do 20 * .27 for the first twenty

then do 16 * .17 for the other 16 cookies

Add 5.4 + 2.72 = 8.12

8 0

2 years ago

determine the equation of the circle if its center is (8,-6) and which passes through the points (5,-2).

ser-zykov [4K]

Answer:

(x - 8)² + (y + 6)² = 25

Step-by-step explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k ) are the coordinates of the centre and r is the radius

Here (h, k ) = (8, - 6 ) , then

(x - 8)² + (y - (- 6))² = r² , that is

(x - 8)² + (y + 6)² = r²

The radius is the distance from the centre to a point on the circle

Calculate r using the distance formula

r = $\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2 }$

with (x₁, y₁ ) = (8, - 6 ) and (x₂, y₂ ) = (5, - 2 )

r = $\sqrt{(5-8)^2+(-2-(-6))^2}$

= $\sqrt{(-3)^2+(-2+6)^2}$

= $\sqrt{9+4^2}$

= $\sqrt{9+16}$

= $\sqrt{25}$

= 5

Then equation of circle is

(x - 8)² + (y + 6)² = 5² , that is

(x - 8)² + (y + 6)² = 25

6 0

2 years ago

Here's another one

pashok25 [27]

Answer:

x=139

Step-by-step explanation:

angles on a straight line add up to 180 degrees

7 0

3 years ago

Read 2 more answers

The Comparing the Shape, Center, and Spread of Data Sets and more

MatroZZZ [7]

Answer:

8

Step-by-step explanation:

7 0

3 years ago