Find the value of the variables. Show your work.

Answer:

x = 8; y = 15

Step-by-step explanation:

First choose any one equation and isolate a variable of your choice

I will use the first equation and isolate variable y

9 = 3x - y

Add y to both sides to make it positive

y + 9 = 3x - y + y

Subtract both sides by 9 to isolate the variable y

y + 9 - 9 = 3y - 9

y = 3x - 9

Now that we know what expression is equal to y, we can substitute this value of y into the second equation

6x = 3(3x - 9) + 3

Use distributive property

6x = 9x - 27 + 3

Combine like terms

6x = 9x - 24

Subtract both sides by 9x

6x - 9x = 9x - 9x - 24

-3x = -24

Divide both sides by -3 to isolate the variable x

-3x ÷ -3 = -24 ÷ -3

x = 8

Plug this value of x into either equation

I will use the first equation because it is shorter

9 = 3(8) - y

9 = 24 - y

Add y to both sides to make y positive

y + 9 = 24 - y + y

y + 9 = 24

Subtract 9 from both sides to isolate the variable y

y + 9 - 9 = 24 - 9

y = 15

Answer:

16.6%

Step-by-step explanation:

hope this helps

have a great day

Answer:

16.35

Step-by-step explanation:

21.8 / 4= 25%

= 5.45

21.8-5.45= 16.35

Answer:

0.485

Step-by-step explanation:

I really need points

Answer: There are 17 times 13 in 223. The answer you divide 223 by 13 which would get you 17.153846153846.

Step-by-step explanation:

Answer:

Step-by-step explanation:

L=4W+8

A=LW, using L from above makes this

A(W)=(4W+8)W

A(W)=4W^2+8W

Answer:

-50

i have made it in the above picture

hope it helps

Step-by-step explanation:

2/5 (j + 40) = -4

(j + 40) =-10

j=-50

Hope it helps

Answer:

D. V=2/9s^3

Step-by-step explanation:

D.

Answer:

3

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

The quotient of 3 and 4 is 0.75.

3/4 = 0.75

--

0.75 x 4 = 3...

So the answer is 3.

Answer:

B

Step-by-step explanation:

Answer:

x = 2, y = -5

Step-by-step explanation:

[tex]-7x + y = - 19 --> -21x + 3y = -57[/tex]

[tex]\left \{ {{-21x+3y=-57} \atop {-2x+3y=-19}} \right.[/tex]

subtract

[tex]-19x = -38\\x= 2[/tex]

substitute

[tex]-2*2 + 3y = -19\\-4 + 3y = -19\\3y = -15\\y = -5[/tex]

The mean number of correct answers will be equal to 385.

The mean is defined as the ratio of the sum of the all the numbers given by the total count of the numbers.

The total questions are 770 and consist of the true and false.

The mean of the numbers will be given as:-

Mean   =   770  /   2  =   385

Therefore mean the number of correct answers will be equal to 385.

To know more about mean follow

https://brainly.com/question/968894

#SPJ2

Answer:

the scale factor is penguin

jkjk the scale factor is 1/2

Step-by-step explanation:

to find the scale factor you take the coordinates of the image and divide it by the coordinates of the preimage

ex. A' coordinates are (3,1)

A coordinates are (6,2)

3/6=1/2

1/2=1/2

therefore the scale factor is 1/2

hope this helps :)

Answer:

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

first you plug in 12 for x so it would then be 2(12) divided by 6 and then follow the rules of math so you would multiply 12 and 2 which is 24 then 24 divided by 6 is 4

Answer:

Step-by-step explanation:

23 beause the shade links of the garden

Answer:

Step-by-step explanation:

Each side of the square garden is 3 inches. Convert each side to sq ft. 1 1/2 x2 = 3 inches. So 4ft x 2 =8ft. 8ft. X 4 sides = 32ft perimeter that needs coverage. Each link equals 2.67 or 2 2/3. 12x2.67=32.04

12 links

Answer:

Step-by-step explanation:

133

102

136

Answer:

Check out a website called calculator soup. They've got awesome fraction calculators for all sorts of things.

Step-by-step explanation:

Answer:

9/20

Step-by-step explanation:

Make 5/6 a reciprocal then turn the division sign into a multiplication sign 5/6 will become 6/5 then multiply across by 3/8, 3/8 x 6/5 = 18/40 = 9/20

Answer:

g(-3) = -27

Step-by-step explanation:

g(x) = -2x² + 3x ---> g(-3)

g(-3) = -2(-3)² + 3(-3)

g(-3) = -2(9) + 3(-3)

g(-3) = -18 - 9

g(-3) = -27

Hope this helps, thank you :) !!

Answer:

2.Relationships

Step-by-step explanation:

Linear means straight and a graph is a diagram which shows a connection or relation between two or more quantity. So, the linear graph is nothing but a straight line or straight graph which is drawn on a plane connecting the points on x and y coordinates.

Answer:

x=−3/4

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

435=−4x+285

Step 2: Flip the equation.

−4x+285=435

Step 3: Subtract 28/5 from both sides.

−4x+285−285=435−285

−4x=3

Step 4: Divide both sides by -4.

−4x−4=3−4

x=−34

Answer:

as a decimal: [tex]x=-0.75[/tex]

as a fraction: [tex]x=-\frac{3}{4}[/tex]

Step-by-step explanation:

note: i'm going to convert the fractions to decimals because i prefer working with decimals rather than fractions :)

first, subtract 5.6 from both sides of the equation.

then divide both sides of the equation by -4.

and that's it! the solution as a fraction is [tex]x=-\frac{3}{4}[/tex] and as a decimal is [tex]x=-0.75[/tex].

if you want to check the solution, just plug one of those values in for [tex]x[/tex] in the original equation. since i converted it all to decimals, i'll check my answer using [tex]-0.75[/tex] for [tex]x[/tex] in [tex]8.6=-4x+5.6[/tex].

first, plug in -0.75 for x.

begin simplifying by multiplying -4 and -0.75.

add 3 and 5.6.

since both sides of the equation are equal, that means your [tex]x[/tex] value is correct and therefore a solution to the equation!! :)

i hope this helped! have a lovely rest of your day <3