Mathematics High School

What is the value of the x variable in the solution to the following system of equations? (1 point)

4x + 2y = 12
x − y = 3

0
−3
3
2

Answers

Answer 1

Answer:

-3

Step-by-step explanation:

Answer 2

Answer:

3

Step-by-step explanation:

4x + 2y = 12

x − y = 3

Make it able to cancel the variable y.

x*2 − y*2 = 3*2

2x − 2y = 6

Add the equations together now that y can be canceled out. Add each like term of the separate equations together.

   4x + 2y = 12

+  2x − 2y = 6

   6x + 0 =  18

6x = 18

6      6

x = 3

I hope this helps!

Related Questions

Rita is planting saplings along her garden fence. When she started, she had x packages of saplings with 5 saplings per package. She planted 15 saplings and has at most 20 left. How many packages of saplings did she start with? What would the solution look like on a number line graph?
When Rita started, she had
packages of saplings. The solution can be represented as
with an arrow to the
.

Answers

Answer:

If we represent x (number of packages of saplings) on a number line graph, it will start on number 4 (number of packages Rita still has) then moves to the right to number 7, that is the number of packages when Rita started to plant.

Step-by-step explanation:

Finbar bought his home for $150,000 in 2010. Property values have increased 10% every year since he has owned the home. Which of the following equations can be ined to represent the price of the home x years after 2010?

- y = 150,000 (1.5)^x

- y = 150,000(1.1)^x

- y = 150,000(0.9)^x

- y = 150,000(0.5)^x

Answers

Answer:

Y=150,000*(1.1)*

Step-by-step explanation

As Every year the rate of increase is 10% therefore the rate 1+10%=1.1, and X is number of years. So, (1.1)*, and after x years to get the correct value you can multiply, y=150,000*(1.1)*

Answer:

y = 150,000(1.1)^x is the answer

Step-by-step explanation:

I did the test and got it right!!

What is the measure of DC?

1. 61
2. 119
3. 122
4. 360

Answers

Answer:

61 it is because it is in first

Convert 34,121 to Scientific Notation

Answers

Answer:

3.4121 * 10 ^4

Step-by-step explanation:

34,121 is same as

3.4121 * 10 ^4

because the first number has to be between 0 and 10 and if you move the decimal 4 places to the right you got the initial number

Please help

What is the fraction in decimal form?

7/5

Enter your answer in the box.

Answers

The answer of 7/5 as a decimal is 1.4

Answer:

1.4

Step-by-step explanation:

Thanks plssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss

What number should go in the empty boxes to complete the calculation for finding the product of 0.53 × 0.67?


Please help due today

Answers

Answer:

0.3551

Step-by-step explanation:

0.53 x 0.67 = 0.3551

don't see empty boxes; hope this helps

Hdjdndbeiekenen ANSWERRRRREEEEEEEEEEEEEEE

Answers

Answer:

It stays open because |-45.50| > 30

Step-by-step explanation:

Given that :

Balance in Linda's account = - 45.50

If she owes more than $30, her account gets closed

The absolute value of any number returns a positive value of that same number :

Hence,

|-45.50| = 45.50

Comparing the options :

|-45.50| > 30

Once, the account does not fall below - $30, Lindsay's account stays open.

Therefore,

The true statement is ;

It stays open because ;

|-45.50| > 30

Where were the two cars in relation to each other when they began traveling?
brainliest if helpful ^^

Answers

Answer:

The answer is A.

Step-by-step explanation:

As can be seen in the graph, car B starts at the "20" mark on the vertical axis, signifying that it starts 20 miles east of car A.

Hope this helped!

Answer:

Here you go sweetheart!

Step-by-step explanation:

At the Clark Ski Resort, it snowed 1/2 of a foot yesterday and 1/5 of a foot today. How much more did it snow yesterday than today?

Answers

Answer:

3/10 foot more snow yesterday

Step-by-step explanation:

1/2 x 5 = 5/10

1/5 x 2 = 2/10

5/10 - 2/10 = 3/10

Please help me, please please help ASAP!!!

Answers

basically u evaluate it into (3⁶y⁵)² then use the properties of exponents to simplify to (729y⁵)² and then ur answer is 729²y¹⁰ or in other words, 3¹²•y¹⁰ so ur answer is B.

14.)A baseball team play 34 games in their season. If they won 55% of the
games they played how many did they win

Answers

They won 18.7 or 19 games if rounded up

Use long division to calculate 276 ÷ 15

Answers

Answer:

18.4

Step-by-step explanation:

What is the answer to -9 = 2/7x + 5

Answers

Answer: x = -49

Step-by-step explanation:

hope this helped

Select all the correct systems of equations.
Which systems of equations have infinite solutions?

Answers

Answer:

y = 14 - 2x

6x + 3y = 42

2x + y = 17

-6x = 3y - 51

Step-by-step explanation:

The following system of linear equations have infinite solutions:

y = 14 - 2x

6x + 3y = 42

2x + y = 17

-6x = 3y - 51

PLEASEE HELP I WILL GIVE BRAINLIEST!

Answers

Answer:

It would be C, Y=x-7

Step-by-step explanation:

Each X in the left column is 7 more than Y in the right column.

Everytime theres an X, you subtract 7 to get Y, making the equation y=x-7

On a coordinate plane, a curved line, labeled f of x, with a minimum value of (negative 1.9, negative 5.7) and a maximum value of (0, 2) crosses the x-axis at (negative 2.5, 0), (negative 0.75, 0), and (0.75, 0), and crosses the y-axis at (0, 2).
Which statement is true about the graphed function f(x)?

F(x) 0 over the intervals (–∞, –2.5) and (–0.75, 0.75).
F(x) 0 over the intervals ( –2.5, –0.75) and (0.75, ∞).

Answers

Answer:

the answer is d just took the test

Step-by-step explanation:

Answer:

i think its D

Step-by-step explanation:

Wesley is raising monarch caterpillars for a school science project. Every day, he feeds 7 fresh milkweed leaves to each caterpillar. Wesley wants to find out how many caterpillars he can feed in a day with a total of 42 leaves. Write an equation that can be solved for n to find the number of caterpillars he can feed in a day?

Answers

Step-by-step explanation:

Let n be the number of caterpillars.

Since each catepillar eats 7 leaves,

Wesley have 7n number of leaves.

In this case 7n = 42, so n = 6.

Answer: 7n = 42, n = 6.

Explanation:

Every caterpillar eats 7 milkweed leaves. That means [tex]n[/tex] is the number of caterpillars Wesley feeds every day. Since we know 7n is equal to 42, n = 6 because 42 ÷ 7 = 6.

Please help me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:2 1/4

Step-by-step explanation: great job you found the answer. is this right?


What is the measure of angle A?*
A.27
B.36
C.63
D.216

Answers

Answer:

B. 36

Step-by-step explanation:

Answer:

36 degrees

Step-by-step explanation:

117 + 27 = 144

180 - 144 = 36

There are 57 balls in a bucket. The balls are numbered from 1 to 57. One ballis randomly selected from the bucket.
What is the probability that ball #54 is chosen?

Answers

Answer:

1/57

Step-by-step explanation:

SEND HELPP I NEED TO PASS SCHOOL

Answers

Answer:

I need help to pass school to

Step-by-step explanation:

so I'm going to use these point to make a question to help me pass school thank you

what is the first step in solving this equation?
5x+7=12​

Answers

Answer:

Subtract 7 from 12.

Step-by-step explanation:

Answer:

subtract 7 from both sides.

5x = 5

x = 1

It takes Serina 0.25 hours to drive to school. Her route is 16 km long. What is Serina’s average speed on her drive to school?

Answers

Answer:

D/T - 16 KM/ 0.25hours = 64 KM/H

Step-by-step explanation:

Answer:

Step-by-step explanation:

if Serina needs t=0.25 hours to drive to school, which is s=16 km away

her speed is

v= s/t    t=0.25h

v=16 km/15 min or v= 64 km/h ( multiply by 4 to get 1 hour)

Which expression is equivalent to 10 - 3(4x + 8)?

A.
-12x - 14

B.
12x + 14

C.
14 - 12x

D.
-14 + 12x

Answers

Answer:

10-3(4x+8)

=10-12x-24

=-12x-14

The answer is A. -12x-14

Solve: 0.3 + d = 7.1 d = _____

Answers

Answer:

d= 3/61

Step-by-step explanation:

Estimate the difference.

14One-ninth – 5.89

8
12
16
20

Answers

Round 14One-ninth to 14

Round 5.89 to 6

Now subtract: 14-6 = 8

The answer is 8

Teddy has two piggy banks. The difference in the amount of money between the two banks is no more than $10. One piggy bank has $7.31 in it. Select the choices that make inequality and statement about the possible amount of money in the other piggy bank correct.

Answers

The possible amount of money in the other piggy bank correct is x < 2.69.

Given that,

Teddy has two piggy banks.

And, The difference in the amount of money between the two banks is no more than $10.

Here, One piggy bank has $7.31 in it.

Let us assume that,

The amount of money in the other piggy bank  = x

Hence, the inequality is,

7.31 + x < 10

Solve for x,

x < 10 - 7.31

x < 2.69

Therefore, x < 2.69 is the possible amount of money in the other piggy bank.

To learn more about inequality visit:

https://brainly.com/question/25944814

#SPJ4

The graph shows the heigh if a tree ever time. What can you reduce the rate of change to be from 2years to 4years

Answers

Answer:

the question sounds confusing but I believe you would reduce the time or the x value so that the years are reduced.

Help plz i’ll give extra points if u do

Answers

I think the answer would be 4.5 hours

what is 8 - 7 1/4 i need the answer fast

Answers

Answer:

3/4

Step-by-step explanation:

i think it is 6.25 :)
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