Solve the system of equations.



5x +2y = 12
5x −2y = 28

Answers

Answer 1
i used elimination. so you start by adding the 2 equations. |5x+2y=12+5x-2y=28| you end up getting |10x=40| the 2y’s cancel out because on is positive and one is negative. then you divide each side by 10. |x=4| you plug this in for x in the first equation. |5x+2y=12|=|5(4)+2y=12| multiply parentheses. |20+2y=12| subtract 20 from each side. |2y=12-20| add like terms. |2y=-8| divide by 2 on each side. |y=-4|. sorry for the long explanation. in conclusion, x=4 and y=-4, or (4,-4)

hope this helps!! please mark brainliest if it’s right!! :)

Related Questions

A number generator was used to simulate the percentage of people in a town who join a health club yearly. The process simulates randomly selecting 100 people from the town and was repeated 20 times. The percentage of people who join a health club yearly is shown in the dot plot Which statement is most likely true about the population of the town? 0 10 20 30 40 50 60 70 80 90 100 Most likely, 40% of the people in the town join a health club yearly. Most likely, about 10% to 20% of the people in the town join a health club yearly Most likely, about 40% to 60% of the people in the town join a health club yearly Most likely, 50% of the people in the town join a health club yearly.​

Answers

Answer:

Most likely, 60% to 75% of the town rides a bike. is the correct answer!

Step-by-step explanation:

The

statement

which is most likely

true

about the

population

of the town is that

60%

to

75%

most likely

rides

a

bike

.

What is Percentage?

This is defined as a number or

ratio

expressed as a

fraction

of

100

and is

expressed

in terms of

%.

Due to the

low percentage

of people in a town who join a health club yearly, it is most likely that performing exercises were prevalent. This therefore means that

majority percentage of people

rides a bike which is 60-75%

Read more about

Percentage

here https://brainly.com/question/24304697

#SPJ2

1.7 + (–5) HELP PLZ!!

Answers

Answer:

−3.3

Step-by-step explanation:

Simplify the expression.


Which percent is equivalent to 1/2?
O 1%
o 2%
o 25%
o 50%

Answers

Answer:

it is 50%

Step-by-step explanation:

1/2 resembles a half of something, 50 is a half of a hundred, 100 would always be the whole or 1000 or 10, the point is that the whole number would always have 1 at the front, and 1 or more zero's at the back, like if someone for example would say, "how good does this taste from a one to a ten" the half would be 5, it's not like someone would say "how good does this taste from a one to a 7, that doesn't make sense, sure it could be a(n) 1000 this time, but you would still do 500 cause it is the half of that.

Me. Schnable are 20% more McNuggets for lunch today than yesterday. If he ate 24 McNuggets for lunch today, how many did he eat yesterday?

Need help! Giving 15 points!

Answers

Answer:

4.8

Step-by-step explanation:

Answer: yesterday he ate 19.2 mc nuggets, i calculated it in my head, and its right, i even asked my math teacher

Step-by-step explanation:

help me solve this math problem?

20/18 = 10/x

x=​

Answers

Answer:

20/18=10/9

x=9

X=9 hope this helped:)

Given : x/5 + 3 = 2x - 24
Prove x = 15

Answers

Answer:

true

Step-by-step explanation:

it is 15 because both give you 6 so 15 is the right answer

Answer:

15

Step-by-step explanation:

x/5 + 3 = 2x - 24

15/5 + 3 = 2(15) - 24

6 = 6

so x = 15

__________________________________________

Answers

Answer:

y = (1/4)x

Step-by-step explanation:

Look at the point (4, 1).

For every 4 gallons of white paint, he uses 1 gallon of red paint.

You can also read it as for every gallon of white paint, he uses 1/4 gallon of red paint.

y = (1/4)x

What is the standard form for the equation y-5= 3(x + 2)

Answers

Step-by-step explanation:

[tex]y - 5 = 3x + 6 \\ y = 3x + 11 \\ if \: y \: equals \: to \: 0 \\ 0 = 3x + 11 \\ 3x = - 11 \\ x =3 \times \frac{2}{3} [/tex]

hich of the following statements does not describe the structure of an atom?

An atom has a small, dense center called the nucleus.
Inside the nucleus of an atom are protons and electrons.
Protons are positively charged sub-atomic particles.
Electrons are negatively charged sub-atomic particles.

Answers

Answer:

it is the second one as a nucleus contains neutrons and protons

Answer:

the second one

Step-by-step explanation:

Inside the nucleus are protons and neutrons and electrons orbit the nucleus.

Quinn is playing video games at a virtual reality game room. The game room charges 20dollars for every 30 minutes of play time.
How much does Quinn need to pay for 150 minutes of play time?

Answers

Answer:

$100

Step-by-step explanation:

150÷ 30 = 5

$20×5 = $100

Which fractions have a decimal equivalent to a repeating decimal

Answers

Answer: 19/3

Step-by-step explanation:

If you want to find which have a decimal equivalent to a repeating decimal, all you have to do is divide each one and see which turns out to be a repeating decimal. 19 divided by 3 is 6.333333333 repeating, so it would be a repeating decimal. This is easiest to do with a calculator, but it is also important to learn how to do it by hand.

 [tex]\bold{Hello!}\\\bold{Your~Answer~Is~Below!}[/tex]

______________________________

 [tex]\bold{Solution~Steps:}[/tex]

[tex]1.)~Turn~the~fraction~into~a~decimal:[/tex]

[tex]\bold{Reduce~the~fraction~\frac{13}{65}~to~lowest~terms~by~finding~the~GCF.}[/tex][tex]\bold{13}[/tex] ÷ [tex]\bold{13=1}[/tex][tex]\bold{65}[/tex] ÷ [tex]\bold{13=5}[/tex][tex]\bold{\frac{1}{5}=0.2}[/tex]

[tex]2.)~Turn~the~fraction~into~a~decimal:[/tex]

[tex]\bold{Divide~\frac{141}{47} .}[/tex][tex]\bold{141}[/tex] ÷ [tex]\bold{47=3}[/tex][tex]\bold{3=3}[/tex]

[tex]3.)~Turn~the~fraction~into~a~decimal:[/tex]

[tex]\bold{Divide~\frac{11}{12} .}[/tex][tex]\bold{11}[/tex] ÷ [tex]\bold{12=0.916666667}[/tex][tex]\bold{0.916666666=R.epeating.}[/tex]

[tex]4.)~Turn~the~fraction~into~a~decimal:[/tex]

[tex]\bold{Divide~\frac{19}{3}.}[/tex][tex]\bold{19}[/tex] ÷ [tex]\bold{3=6.33333333}[/tex][tex]\bold{6.33333333=R.epeating.}[/tex]

______________________________

 [tex]\bold{Answer:}[/tex]

[tex]\bold{The~R.epeating~decimals~are:\frac{11}{12},\frac{19}{3}.}[/tex]

______________________________

 [tex]\bold{Hope~this~helps,}\\\bold{And~best~of~luck!}\\\\\bold{~~~~~-TotallyNotTrillex}[/tex]

How many times smaller is a group of 19 coins than a group of 76 coins?

Answers

Answer:

Hello!!! Princess Sakura here ^^

Step-by-step explanation:

Ok I like looking at these type of questions like this. If you have 76 students and you want to put them in groups of 19. How many groups would you have?

That's easier for my brain to comprehend and now I know that all I have to do is divide the 76 students by 19 to get 4 groups.

So in your problem the 19 coins would be 4x smaller than the 76 coins.

PLS HELP WITH THESE TWO QUESTION PLS PLS PLS

Answers

Answer:

C (180 = 80 + 45 + x)

Step-by-step explanation:

When you subtract 80 and 45 from both sides, you would result in x. 180 is the sum of all triangle's interior angles.

what's the total area of each smaller space is 5 feet on each side

Answers

Answer:

100

Step-by-step explanation:

100

The total area of the four squares is the sum of each individual area of each square. Hence, the total area of the square is 100 ft²

Given that :

Side length of each square, s = 5 feets Area of a square =

The area of each square can be calculated thus :

Area = = 25 ft²

The area of the entire square :

(5² + 5² + 5² + 5²)

(25 + 25 + 25 + 25) = 100 ft²

The total area of the square is 100 ft²

Learn more : https://brainly.com/question/18790205

A fish tank measures 10 inches long and 5 inches wide. Micheal wants to buy a fish tank that can hold 150 cubic inches of water. What is the independent and dependent variable

Answers

Answer:

h = 3 inches

Step-by-step explanation:

Volume of the fish tank = length × width × height

Volume = 150 cubic inches

Length = 10 inches

Width = 5 inches

Height = x

Volume of the fish tank = length × width × height

height = volume of the fish tank / length*width

h= 150 / 10*5

h = 150 / 50

= 3

h = 3 inches

The height = 3 inches

From the height formula,

height = volume of the fish tank / length*width

The dependent variable is height

The independent variable are length, width and volume

I need the answer to “3x+2y=r solve for x”

Answers

Answer:

[tex]x = \frac{r - 2y}{3}[/tex]

Step-by-step explanation:

3x + 2y = r

    -2y     -2y

3x = r - 2y

Now that 2y has been subtracted from both sides you can isolate the variable. To do that you would divide both sides by 3.

[tex]x = \frac{r - 2y}{3}[/tex]  

Hope that helps and have a great day!

Please help me answer this question ASAP!!!!


Given A=(-1,10) and B=(x,2). Find the values of x if AB=10

Answers

Answer

20 + 2 square root 10 units

Step-by-step explanation:

Chang knows one side of a triangle is 13 cm. Which set of two sides is possible for the lengths of the other two sides of this triangle?

5 cm and 8 cm
6 cm and 7 cm
7 cm and 2 cm
8 cm and 9 cm

Answers

Answer:

8 cm and 9 cm

Step-by-step explanation:

got it right!

Answer:

8cm 9cm

Step-by-step explanation:

Jamar bought new headphones. The original price was $170, but Jamar bought the headphones when they were on sale for 30% off. What did Jamar pay for the new headphones?

Answers

Answer:

Amount pay = $119

Step-by-step explanation:

Given:

Original price = $170

Discount = 30%

Find:

Amount pay

Computation:

Amount pay = Original price - Discount

Amount pay = $170 - 0.30(170)

Amount pay = $170 - 51

Amount pay = $119

Which one?
A. B. C. or D? ​

Answers

The answer is D
Ok I hope this help you

During inflation, the best methods to use in inventory valuation that produces the smallest amount of profit is:



A. Specific Invoice


B. LIFO


C. FIFO


D. Weighted Average



The answer is C. FIFO

Answers

Answer:

C FIFO

Step-by-step explanation: FIFO is an acronym with full meaning of first in first out.

This method is easier to understand, it is universally accepted and trusted. It makes bookkeeping easier with less chance of errors.

On which number line do the letters represent -1 and +7?
P
1
-8
-6
-4
-2
O
2
4
8
6
Q
P
H
-2 0 2
+
-8
-6
-4
4
6
oo
Р
Q
O
-6
-4
-2
0
2
4
6
8
P
Q
-8
-6
-4
-2
0
2
4
6
8

Answers

Answer:

sorry but its not clear ........

the 3rd number line hun

Which pair of lines are parallel?

Answers

Any lines can be parallel

Pls me I need help ASAP!

Answers

Answer:

17x24=248

248+32=280

280-13=267

Step-by-step explanation:

Jennifer has 82 small spoons and b big spoons. What is the expression that shows how many total spoons Jennifer has.

Answers

Answer:

82+b

Step-by-step explanation:

I don't know if you're supposed to solve it but that should be the expression.

Your welcome :D

Evaluate 1/3•2/5 help me please

Answers

Answer:

5/6

Step-by-step explanation:

1/3•2/5

1/3 • 5/2

1 • 5 = 5

3 • 2 = 6

5/6

What is 3,576.142 rounded to the nearest hundreds?

Answers

Answer:

3.600

Step-by-step explanation:

a bag of chips costs $3.79 including tax. mr. connor wants to purchase chips for his class and has a $15 budget. write an inequality to solve for the number of bags of chips mr. connor can purchase with his budget

Answers

Answer: if I am not right I am sorry but think it is $0.25

Step-by-step explanation:

Plllllllllzzzzzzz I I need a little help so don’t be shy and I know it’s a lot but it’s worth it
So thanks

Answers

Answer:

The wheel will make 8 Rotations.

The Bike will travel 75 feet

Step-by-step explanation:

Wheel: 40 feet / 5 feet per rotation = 8 rotations

Bike: 5 feet per rotation * 15 rotations = 75 feet traveled

Evaluate the expression 4(x+2−5x) when x=2.

Answers

Answer:

-32

Step-by-step explanation:

Remember order of operations

4((2)+2-5(2))

4(2+2-10)

4(4-10)

4(-8)

-32

4(2+2-5(2))

Simplify

4 ( 2 + 2 - 10 )

Multiply 4 to everything inside the parentheses

( 8 + 8 - 40)

Add and subtract

16 - 40

The answer is -24
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