2x + 2y = 28
8x - 2y= 22

system of equations

Answers

Answer 1

Answer: eliminate one of the variables..

2x + 2y = 28

2x = -2y + 28

8x - 2y= 22

8x = 2y + 22
x = 0.25y + 2.75

combine equations...

-y +14 = 0.25y + 2.75

solve for the variable..

-y - 0.25y = 2.75 - 14
-1.25y = -11.25
y = 9

replace y with 9 in previous equation..

x = -y + 14
x = -9 + 14
x = 5

so y = 9 and x = 5

I hope I did that right good luck!

Related Questions

Kiara is stacking wood. Kiara stacks sixty-five pieces of wood. There are only seven more pieces of wood for kiara to put on the stacks. When kiara is done, she looks at the stacks of wood. How many pieces of wood does kiara see in her stack of wood? Show all your mathematical thinking.
***Please help with this*** ~Thank you :)
What is the value of x when -25(x - 4) = -55(x - 10) ?
barb is making a bead necklace. she strings 1 white bead then 3 blue beads then 1 white bead and so on. write the numbers for the first 8 beads that are white. what is a rule for the pattern?
Can u help plz because i dont get it!!!!12 The price of a cake is £C.The total cost of buying 20 cakes is £T.Write a formula for T in terms of C.thanks:):):):):):):)::)::):):::)):):):):):):):):):):):):):):):):)):):):):):)):):):):):):):):

1 inch = 125 miles, city a is 300 miles from city b, what is the distance between the two cities on the map

Answers

Answer:

2.4in.

Step-by-step explanation:

If 125 miles is an inch, then it could be put into an equation like this: 125x=300. To solve it, divide both sides 125 to leave X alone on one side. X=2.4. Since 125= 1inch, then there is no more work needed.

Answer:

2.4in.

Step-by-step explanation:

If 125 miles is an inch, then it could be put into an equation like this: 125x=300. To solve it, divide both sides 125 to leave X alone on one side. X=2.4. Since 125= 1inch no more needed

The front tent is 8 feet and 5 feet tall what is the part of the tent

Answers

well if u think about it 8*5= 40ft ²

A square has an area of 64x^2y^4. What is its side lenght and perimeter

Answers

For this case we have that by definition, the area of a square is given by: $A = l ^ 2$

Where:

l: It's the side of the square

We have as data that:

$A = 64x ^ 2 * y ^ 4$

So:

$64x ^ 2 * y ^ 4 = l ^ 2$

We cleared l, applying root to both sides:

$l = \pm \sqrt {64x ^ 2 * y ^ 4}$

We choose the positive value of the root:

$l = \sqrt {64x ^ 2 * y ^ 4}\nl = 8xy ^ 2$

So, the side of the square is: $8xy ^ 2$

The perimeter is given by:

$P = 4l\nP = 4 (8xy ^ 2)\nP = 32xy ^ 2$

Answer:

$l = 8xy ^ 2\nP = 32xy ^ 2$

Answer:

Side length = 8xy^2

Perimeter = 32xy^2.

Step-by-step explanation:

As it's a square the side length is the square root of the area

= √ (64x^2y^4)

= 8xy^2.

The perimeter is 4 times this.

Which value is equivalent to 7 multiplied by 3 multiplied by 2 whole over 7 multiplied by 5, the whole raised to the power of 2 multiplied by 7 to the power of 0 over 5 to the power of negative 3, whole to the power of 3 multiplied by 5 to the power of negative 9?6 over 25
36 over 25
12 over 5
252 over 5

Answers

The answer is 36 over 35, which is 1.44 in decimals.

I need help with #11. I've just started Trig today. The back of the book says the answer is 0.75 if that helps.

Answers

Hi,
BC²=CA²-BA²=13-9=4=2² (Pythagore)

CB/ED=AB/AD (Thalès)
2/2.5=3/AD==>AD=3*2.5/2=7.5/2
DB=DA-AB=7.5/2-3=0.75
I don't know how you call this 2 theorems (sorry)

In bowling, you get a spare when you knock down the ten pins in two throws. How many possible ways are there to get a spare?

Answers

9 ways are possible hope this helped straight and to the point not gonna go and show exactly how just trust me

Final answer:

In bowling, there are ten possible ways to get a spare. This involves knocking down a total of 10 pins in two throws, regardless of the number of pins knocked down in each throw.

Explanation:

In bowling, there are multiple ways to get a spare. A spare requires all ten pins to be knocked down, but it does not matter how many pins were knocked down in each throw, only that the total after two throws is ten. For example, you could knock down 9 pins in the first throw and 1 in the second, or 5 pins in both throws. Therefore, there are ten possible ways to get a spare, ranging from knocking down 1 pin on the first throw and 9 on the second, to knocking down 9 pins on the first throw and 1 on the second throw, and every combination in between.