Solve with substitution. Show each step of your work

4x + y = 12
6x + 2y = 18

Answers

Answer 1
4x + y = 12
Get y by itself
Subtract 4x
y = -4x + 12

Since you know what y is, you can plug the value into the second equation

6x + 2(-4x + 12) = 18
6x - 8x + 24 = 18
-2x = -6
x = 3

Plug the value 3 into x for y = -4x + 12 in order to find y
-4(3) + 12 = y, y = 0

Solution: x = 3, y = 0

Related Questions

A student at lynbrook high School are building a shape below to put in their school. What is the total area of the shape and square units?

Answers

Answer:

j8jjjhvvbbbvvbbbbvvvbbbbbb

40
Step-by-step explanation:
area= length times width
1 times 10= 10 times 2= 20
2 times 10=20
20+20=40

Irene knows there are 2 cups in 1 pint. She writes the equation c=2p to find the number of cups, c, in any number of pints, p. Use the drop-down menus to complete the statements about Irene's equation.

Answers

Answer:

See Explanation

Step-by-step explanation:

The question is incomplete, as there are no options to select from.

However, a general explanation is as follows.

Given

[tex]2\ cups = 1\ pint[/tex]

Required

Is [tex]c = 2p[/tex] a correct expression?

Let

[tex]c = cups[/tex]

[tex]p = pint[/tex]

So:

[tex]2\ cups = 1\ pint[/tex]

becomes

[tex]2 * c = 1 * p[/tex]

[tex]2c = p[/tex]

Divide both sides by 2

[tex]c =\frac{1}{2}p[/tex]

Hence:

[tex]c = 2p[/tex] is incorrect

PLEAES HELP HURRY i will give brainliest

Answers

sfdfgjhndghjStep-by-step explanation:

Answer:

The answer is J.

Step-by-step explanation:

To find the slope of the line, pick two dots on that are EXACTLY on the grid.

I picked (0,3) and (2,2)

First, count how many units down the two points are from each other

I counted one.

Then, count how many units they are away from the side.

I got 2.

Slopes are rise over run or y over c so the slope is 1/2

The line is negative, too as it is going down so the slope is negative.

Therefore, the slope is -1/2 and only one option have a slope of -1/2 and it’s J

Also, to know which number is the slope look for the number before the x. In slope intercept form, that is the slope.

Solve for y.
- 12 = 6y +18-9y

Answers

Answer:

[tex] \boxed{y = 10} [/tex]

Step-by-step explanation:

-12 = 6y + 18 – 9y

[Group like terms 6y and -9y]

-12 = (6y – 9y) + 18

[Simplify the expression]

-12 = -3y + 18

[Subtract 18 from both sides, subtraction property of equality, to isolate the variable and the value]

-12 = -3y + 18

–18 –18

-30 = -3y

[Divide by -3 from both sides, division property of equality, to get the variable y by itself]

-30 = -3y

÷(-3) ÷(-3)

10 = y

[Symmetric property of equality, if b = a, then a = b]

y = 10

Which expression has a value of 15 when n = 7?

A.43-5n

B.3n-5

C.6n-28

D.19- 28/n

Answers

Answer:

The answer is D.

Step-by-step explanation:

28/7 = 4 and 19-4 = 15.

The cost of a pen at the office supply store is $2.65. The school store sells the pen for $3.45. How much does the school store markup the pen?

Enter the correct answer in the box.

$$

Answers

The pen is what ever when you subtract them

i need help abc or d plzzzzz

Answers

Answer:

Isosceles and Right

Step-by-step explanation:

An Isosceles Right Triangle is a right triangle that consists of two equal length legs. Since the two legs of the right triangle are equal in length, the corresponding angles would also be congruent. Thus, in an isosceles right triangle, two legs and the two acute angles are congruent.

Answer:

Isosceles and right

Step-by-step explanation:

We have a picture of triangle and are asked to name it, look at definitions below :

Isosceles - Geometrical figure with three sides and three angles

Right - Triangle where one angle is a right angle (90°)

Scalene - Triangle where all three sides have different lengths

Acute - Triangle where all three sides are less than 90°

If we look at the triangle, we can tell that it has three sides and three angles, therefore isosceles must be in one of the answer choices. Crossing out the options scalene and acute / scalene and right.

Now we have two options and we need to determine whether this triangle is an acute triangle or is a right triangle.

To figure out so we can look at the angle in the bottom left, which when measures equals to 90°. Therefore making it a right triangle and crossing out the other option.

Our answer left is Isosceles and Right.

Find the value of x
48°
132°
132°

Answers

Answer:

Step-by-step explanation:

there’s no other clues to what it could be, and since it’s x it would be X°

There are 4 boys and 16 girls planning the next school dance. What is the ratio of boys to girls planning the school dance?

Answers

Answer:

1 : 4

Step-by-step explanation:

If you simplify the amount of boys over girls, you get 1/4.

I think this is right
1 boy to 4 girls

The radius of a circle is 8.5 inches. The circumference of the circle is C inches.
A. 85/c
B. c/17
C. c/8.5
D. 17/c

Answers

Interpreting as: circle 8.5 inches.

Assuming

"circle"

is a geometric object

 

circle | radius 8.5 inches

 

Equation:

(x - x_0)^2 + (y - y_0)^2 = 72.

(assuming center (x_0, y_0))

Properties:

diameter | 17 inches

area enclosed | 227 in^2 (square inches)

circumference | 53.4 inches

answer is D. 17/C

x
An investment account started at $800 at the
beginning of the month. By the end of the month, the
account had 125% of $800 in it. What was the final
account balance?

Answers

Answer:

Are we human, or are we dancer

Step-by-step explanation: this is an answer your teacher would love trust me ;)

What is the lateral surface of the triangular prism?

Answers

Answer:

5

Step-by-step explanation:

what is the area of the circle r=5

Answers

Answer:

A≈78.5

Step-by-step explanation:

Formula : pie * r^2

3.14 * 5^2

3.14 * 25

78.5

Don't have a question,Need help asap​

Answers

Answer:

x = 31

m<ABC = 113

Step-by-step explanation:

The angles are supplementary.

x + 82 + x + 36 = 180

2x + 118 = 180

2x = 62

x = 31

m<ABC = x + 82 = 31 + 82 = 113

Answer:

x = 31

m<ABC = 113

Rowenas new kitten weights 12 times as much as her hamster. The conbines weight of the kitten and thw hamster is 468 grams. What is the weight of the kitten

Answers

Answer: 36

Step-by-step explanation: 36x12=432

432+36=468

Which of the following statements are true about the graph of f(x) = 6(x + 1)2 -9?
Check all of the boxes that apply.

a. The vertex is (1, -9).

b. The graph opens upward.

c. The graph is obtained by shifting the graph of f(x) = 6(x + 1)2 up 9 units.

d. The graph is steeper than the graph of f(x) = x2.

e. The graph is the same as the graph of f(x) = 6x2 + 12x - 3.

Answers

Answer:

Step-by-step explanation:

a. The vertex is (1, -9).  False.  The vertex is (-1, -9).

b. The graph opens upward.  True.  That coefficient '6' is positive.

c. The graph is obtained by shifting the graph of f(x) = 6(x + 1)2 up 9 units.  False.  It's DOWN 9 units.

d. The graph is steeper than the graph of f(x) = x^2.  True.  The given function increases 6 times faster than does x^2.

e. The graph is the same as the graph of f(x) = 6x2 + 12x - 3.

Let's put f(x) = 6(x + 1)^2 -9 into standard form.  Expanding the first term, we get f(x) = 6(x^2 + 2x + 1) - 9, or f(x) = 6x^2 + 12x + 6 - 9.  YES, TRUE

HELP ASAP!!!!!! thank youuu

Answers

Can you show the full picture

Xavier bought a bicycle that was on sale for 15% off.If Xavier paid $68 for the bicycle,how much money did he save,compared to the original price

Answers

Answer:

453.33

Step-by-step explanation:

Ratios:

[tex]\frac{15}{100} =\frac{68}{x} \\\\15x=6800\\x=453.33[/tex]

Double check:

453.33(0.15) = 68

Jenny counted the coins in her bank.

She had 4 times as many nickels as dimes.
She had 8 more quarters than nickels.
She had 52 dimes.
How many quarters did Jenny have in her bank?

A.
21

B.
64

C.
200

D.
216

Answers

Answer:

the top one is correct

Step-by-step explanation:

byee

Will mark brainly
ASAP

Answers

Answer:

The angles that are considered vertical, would be those that are directly across from each other. In this case, it would be 1 and 3; and 2 and 4.

I hope this helped!!

giving brainliest 3x^{2} -5x-2=0

Answers

Answer:

Step-by-step explanation:

I can guess what the instructions are, but it'd be helpful if you were to share them.

3x^2 - 5x - 1 = 0 is a quadratic with coefficients {3, -5, -1}.  Find the discriminant b^2 - 4ac:  25 - 4(3)(-1) = 13.

Because the discriminant is positive, we know we have two unequal real roots here.  Continuing with the quadratic formula, we obtain:

      -(-5) ±√13          5 ± √13

x = ----------------- = ----------------

            2(3)                   6

Answer:

4x=2

Step-by-step explanation:

3x^2-5x-2=0

 9x-5x-2=0

  4x  +2   +2

       4x=2

A 12 foot ladder is placed 3 feet from a house and leaned against the house. At what height does the ladder touch the house?

Answers

The answer will be 12.37 ft. Hope this helps! Mark brainly please!

The Ericsson method is one of several methods claimed to increase the likelihood of a baby girl. In a clinical trial, results could be analyzed with a formal hypothesis test with the alternative hypothesis of p>0.5, which corresponds to the claim that the method increases the likelihood of having a girl, so that the proportion of girls is greater than 0.5. If you have an interest in establishing the success of the method, which of the following P-values would you prefer: 0.999, 0.5, 0.95, 0.05, 0.01, 0.001? Why? The P-value of (0.999.05.095.005-001.0001) 2 is preferred because it corresponds to the sample evidence that most strongly supports the (null/ altenative)? hypothesis that the method (is/ is not)? effective.

Answers

Answer:

0.001

Step-by-step explanation:

Ericsson is claimed to increase the likelihood of a baby girl ;

Given the alternative hypothesis to buttress this claim :

HA : p>0.5

In other to establish the success of Ericsson's claim, then there must be significant evidence to reject the Null hypothesis ; hence adopt the alternative.

To Do this, we need a very small Pvalue ; such that it will be lesser than the α - value in other to reject the Null and adopt the alternative.

Recall ;

Pvalue < α ; We reject the Null

Therefore, from the options, we choose the smallest Pvalue as we want the Pvalue to be as small as possible.

how many dose 35 get to 56?

Answers

The answer is 21 your welcome

Find cos(3) in the triangle​

Answers

B I think but I’m pretty sure

Answer:

I'm pretty sure its a, if not b

2(x-3)-5 equal to or less than 9

Answers

Answer:

x ≤ 10

Step-by-step explanation:

2x-6-5 ≤ 9

2x-11 ≤ 9

2x ≤ 20

x ≤ 10

A gallon of paint can cover 360 square feet. The radius of a standandard NBA basketball is 4.75 inches. How many basketballs will the paint cover? ( note 144 square inches in 1 square foot )

Answers

Answer:  182 basketballs

===========================================================

Explanation:

We're told that 1 square foot is 144 square inches (this is from 12*12 = 144, since 12 inches = 1 ft).

So because of this, 360 square feet converts to 360*144 = 51,840 square inches.

One gallon of paint can cover 51,840 square inches.

Now let's find the surface area of the sphere, aka ball.

It has a radius of r = 4.75 inches, so,

SA = 4*pi*r^2

SA = 4*pi*(4.75)^2

SA = 90.25pi

SA = 283.528736986479 which is approximate

The surface area of one ball is roughly 283.528736986479 square inches.

Divide the amount of area the paint can cover over the surface area of one basketball:

(51,840)/(283.528736986479) = 182.838609415709

This rounds down to 182. We round down because we won't have enough paint to cover the 183rd basketball.

One gallon of paint can cover 182 basketballs.

The graph shown meets the conditions -3 ≤ y ≤ 3.
True or False

Answers

Answer:

true

Step-by-step explanation:

Simplify by adding like terms: 2abab - 4ba^2b + 7ab^a + 3a^2b

Answers

Bodyodyodyodyodyodyodyyyyyyyyydodydoy 19481948 west national park

Brian and sonya each have a container. They mark their containers to show tenths. Brian and sonya both fill their containers with 0.7 units of juice. However, brian has more juice in him container. Explain how this is possible.

Answers

Answer:

Step-by-step explanation:

Brian could have more juice than Sonya in actual sense, This is because the representation used, that is the container has been calibrated to show tenth. This means that decimal values of juice in the container will not show explicit volume beyond tenth. Hence the volume will be rounded.

For instance, if the actual volume of juice Brian has Is 0.74 and that owned by Sonya is 0.69. In actual sense, 0.74 > 0.69 . However, if both pour their juice into the calibrated container, Brian's volume will be rounded to the nearest tenth as 0.7 and Sonya's (0.69) will also be rounded to 0.7.

But in actual sense, Brian has more Juice than Sonya.

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