Help please!
solve the system of equations using elimination.
X-Y=3
2x+2y=50

Answers

Answer 1

Answer:

abcdefg

Step-by-step explanation:

Answer 2

Answer:

x = 14

y = 11

Step-by-step explanation:

x - y = 3

2x + 2y = 50

multiplty x - y = 3 by two so we can get an equal value

2x - 2y = 6

2x + 2y = 50

-2y and 2y can be cancled out. That means we don't need to change any signs and we can add everything exept 2y and -2y becuase they will be cancled out.

4x = 56

Divide each side by 4 to leave x alone.

x = 14

Now that we know the x value, take one of the equations in the question and plug it in. I am going to use the equation x - y = 3 to make it easier.

14 - y = 3

-y = 3 - 14

-y = -11

y = 11

Now we know that y = 11.

I hope this helps!


Related Questions

(-3z+5)(-3) can you guys help with this one?

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Without knowing the value of z (9z-15) is the answer of the equation in simplest form
9x-15 is the answer for this question because -3z*-3 is 9z and 5*3 is 15

HELP PLEASE HELP!!!!!

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Answer:

(i): A triangle where all three sides are equal and the same.

(ii): A triangle where all three sides are unequal in length.

(iii): A triangle that has two sides of equal length.

(iv): A triangle where all three internal angles are acute(they measure less than 90 degrees.

(v): A triangle where all three internal angles are obtuse(measure above 90 degrees).

(vi): A triangle where one internal angle is a right angle(90 degrees).

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Step-by-step explanation:

which leaner equation represent the graph

Answers

y= -3x - 2

Step-by-step:
The points graphed are (0,-2) and (-1,1)
We can see that the point goes up by 3 and left by 1. Because the line is in hemispheres 2 and 4 mostly, it is a negative line.

The equation to find the coefficient of the variable x is rise/run. The line rises up three, and runs left negative. This makes that equation 3/-1, or simply -3 when simplified.

To find the term, we have to find where the line crosses the y axis. That’s when the x value of the point is 0. (0,-2) is where the line crosses the x axis, making the term -2.

So, y= -3x - 2

Help me please.........

Answers

Okay these answers are easy... oh god what is that I’m sorry but lord...

To get to the campsite Rick has to canoe 10 miles, hike 2 miles, and then canoe another 5 miles. If Rick canoes at a steady rate of 5 mph and hikes at a constant 2 mph, how long will it take Rick to get to the campsite?

Answers

Answer:

I'd say it will take him around 4 hours

Step-by-step explanation:

4 hours 10/5=2 2/2=1 5/5=1 2+1+1=4

Rewrite the equation A = 3B in terms of “B =”.

Answers

Divide both sides by 3
B = A/3

Answer:

B=A/3

Step-by-step explanation:

1. Given

A = 3B

2. Divide both sides by 3.

A/3 = B

3. Switch sides.

B = A/3

PLEASE HELP!!!!!!!

Which of the following functions represent exponential decay?
y = -2 x
y =(1/2)^ x
7 = 2^ 0.5x
y = 2^x

Answers

Answer: C) y=2^0.5x

Step-by-step explanation:

Trust me pls

Plsss helppp i rlly need help with this math!!!

Answers

14. 11.2 13. 150 hope this helps

Answer:

13.150

14. 11.2

Step-by-step explanation:

Have a good day :)

Answer all and I give brainliest

Answers

6. Choice b
7. $75 per hour
8. Don’t know

Answer question here ASAP :))

Answers

Answer:

y = - 2x - 7

Step-by-step explanation:

PLEASE ANsWer THiS
Question in picture ⬇️

There are two

Answers

Answer:

dude you have complicated questions

Step-by-step explanation:

Which expression is equivalent to 2(d + 7)? ASAP PLEASE

Answers

It is c I did the test/quiz

You multiply 2 by d then and then by 7 making 2d+14

Which is the correct simplified version of the expression shown after distributing and combining like terms?

Answers

It would be b hookkk
im going with the answer above. B

Melissa is making a piece for a stained glass window that has the shape and measures shown below. Point C is the center of the partial circle that forms one corner of the stained glass piece. Which area is the closest to the area of the stained glass piece in square inches? Use 3.14 for π

Answers

Answer:

184.26   in 2

Step-by-step explanation:

Answer:

184.26

Step-by-step explanation:

Please help with this question! Look at the images, there are two you have to answer!! PLEASE HELP!

Answers

The answer is...

1. Is A
2.Is B

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A weightlifter is using a weightlifting bar that weighs 45 pounds. If x represents the amount of weight that the weightlifter puts on the bar and y represents the total amount that the weightlifter lifts, with the weight of the bar included, which of these functions models this situation

Answers

Choice c because 45 is the start weight while x changes
I think it A hope this helps

Hello! sorry need help again. :) Please solve the problem below...

Answers

RS goes with TS. TU goes with RQ. QS goes with US.

pick the measure that is equivalent to 5 meters here are the answer choices A.50 millimeters B.500 millimeters C. 50 centimeter D.500 centimeter

Answers

Answer:

D

Step-by-step explanation:

1m=100cm

so 5m x 100=500 cm

In the scale used on a blueprint, 1/2 inch represents 4 feet. On the blueprint, what is the length of a room with an actual length of 28 feet?

Answers

Answer:

3 1/2"

Step-by-step explanation:

All I did was multiply 4 into 28, take that variable and divided it by 2

Answer:

3 1/2

Step-by-step explanation:

Sorry this is late.

Janice wanted to calculate 3/5 of the sale price of new jeans on her calculator which decimal should she type into her calculator that has the same value as 3/5

Answers

Answer: 0.6

Step-by-step explanation:

Answer: 0.6
Explain: Because 3 divided by 5 is 0.6

Please help with this one make sure you tell me which one you are doing

Answers

Answer:

For the first one 13 7/8 - 9 3/4= 4 1/8

Step-by-step explanation:  turn to an improper faction it helps me

Answer:

4 1/8

Step-by-step explanation:

13-9=4

3/4=6/8

7/8-6/8=1/8

13 7/8-9 3/4=4 1/8

A business owner bought a product for $20. The business owner sold the product for $32. By what percent was the product marked up?

Answers

Answer:

60%

Step-by-step explanation:

Answers: 60%

Explaination: You divide 32 by 20 get 1.6

-6(-n+4)=18

this is for my friend lol i’m helping him w his assignment

Answers

Answer:

-6(-n+4)=18

6n-24=18

6n-24+24=18+24

6n=42

n=7

Step-by-step explanation:

David went for a run in his town.
• He ran from his house to the school, which is 1.2 miles.
• Then he ran 3 laps around the school track. Each lap is 0.25 miles.
• Then he ran halfway to the gas station. The distance from the school track to the gas station is 2.68 miles
Finally he ran straight home, which is 0.49 miles.
What is the total distance David ran?

Answers

1.2 plus .75 plus 1.34 plus .49 which is 3.78

Which expression represents the difference (4b+7)−(6b−3)? show your work..

Answers

Answer:

-2b + 10

Step-by-step explanation:

(4b + 7) - (6b - 3)

4b + 7 - 6b + 3

-2b + 10

-2b + 10 is the answer

Harry is using a total of 34 feet of lumber to make a bookcase. The left and right sides of the bookcase are each 5 feet high. The top, bottom, and two shelves are all the same length, labeled w. How long is each shelf?

Answers

Answer:The most frequently used quality materials for custom-built wood shelves are 3/4” thick plywood, poplar, or pine; definitely avoid the melamine-laminated composite shelving and MDF.

Step-by-step explanation:

3/4 would be the answer

another brainliest if its right :D

Answers

Answer:

C

Step-by-step explanation:

Process of elimination

MEEE do thanks I need points or anything

Select the expressions that are equivalent to 12n – 8. Select all that apply.
A. 3n + 4 + 3n + 4 + 4n
B. 11n + 4 + n –12
C. 6(6n – 2)
D. 4(3n – 2)
E. 4n + 22 – 12 + 8n

Answers

Answer:

B and D

Step-by-step explanation:

B= 4(3n-2)

D=12n-8 which equals 4(3n-2)

Option B 11n + 4 + n –12 and D 4(3n – 2) are the expressions that are equivalent to 12n-8.

What are equivalent expressions?

Those expressions that might look different but their simplified forms are the same expressions are called equivalent expressions. To derive equivalent expressions of some expressions, we can either make it look more complex or simple. Usually, we simplify it.

We are given an expression as; 12n – 8.

A. 3n + 4 + 3n + 4 + 4n

= 3n+3n+4n+4+4

=10n+8

B. 11n + 4 + n –12

=11n+n+4-12

=12n-8

C. 6(6n – 2)

=36n-12

D. 4(3n – 2)

=12n-8

E. 4n + 22 – 12 + 8n

=4n+8n+22-12

=12n+10

Therefore, Option B 11n + 4 + n –12 and D 4(3n – 2) are the expressions that are equivalent to 12n-8.

Learn more about expression here;

https://brainly.com/question/14083225

#SPJ2

pls help me and pls explain how u got answer

Answers

Answer:

q+4 + d-3 + n ; first

Step-by-step explanation:

first :q quarter d dimes n nickels

then: q+4 quarter d dimes n nickels

then: q+4 quarter d-3 dimes n nickels

so you have q+4 + d-3 + n

first is the only option that has division the other involve subtraction

Kayla is given a monthly allowance. She uses 40% of this allowance to purchase a designer bag, and then donates $15 to a charity. If she ends up with $155, which of the equations below can be used to determine what her monthly allowance was?
a. 0.40 X -15 = 155
b. 40 X + 15 = 155
c. 0.60 X - 15 = 155
d. 60 X -15 = 155

Answers

Answer:

A. 0.40x - 15=155

Step-by-step explanation:

40% can be written as 0.40

x = total money earned

-15 from that total

The expression which can be used to calculate her monthly allowance is 0.6X - 15 = 155

Let :

monthly allowance = X

Designer bag purchase = 40% of X = 0.4X

Donation to charity = $15

Total amount left = $155

Percentage left after bag purchase :

1 - 0.4X = 0.6X

0.6X - charity = amount left

Therefore, the required expression is 0.6X - 15 = 155

Learn more : https://brainly.com/question/18106342

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