how do i solve for equations that have 2 variables

Answers

Answer 1

Answer:

To solve for an equation with two variables, substitute a zero(0) into the other variable and find one variable.

Step-by-step explanation:

To solve for an equation with two variables, substitute a zero(0) into the other variable and find one variable.

Simple Example:

3x+3y=12

Substitute 0 as y,

3x+0=12

3x=12

12/3=4

x=4

Now substitute 4 into the main equation,

3(4)+3y=12

12+3y=12

-12      -12

3y=0

0/3=0

y=0

So the answer is

3(4)+3(0)=12

12=12


Related Questions

!!!! I NEED HELP RIGHT NOW ITS DUE IM 5 MINUTES !!!!

Answers

Answer:

Step-by-step explanation:

A = h(a+b)/2 for h

2A = h(a + b)

h(a+b) = 2A

h = 2A/(a+b)

HELP ME PLS
A media research survey showed that one evening, 2/3 of all U.S. households had their televisions on, and 3/8 of them were watching a World Series baseball game. What fraction of the U.S. households was watching the game?

Answers

Answer:

sfhjty

Step-by-step explanation:

For babysitting, Nicole charges a flat fee of $3, plus $5 per hour. Write an equation that will represent the cost.

Answers

Y= 3+5x That seems about right to me

Find variable of b + 25 = b —25

Answers

Answer:

There is no solution

Step-by-step explanation:

Simplifying

b + 25 = b + -25

Reorder the terms:

25 + b = b + -25

Reorder the terms:

25 + b = -25 + b

Add '-1b' to each side of the equation.

25 + b + -1b = -25 + b + -1b

Combine like terms: b + -1b = 0

25 + 0 = -25 + b + -1b

25 = -25 + b + -1b

Combine like terms: b + -1b = 0

25 = -25 + 0

25 = -25

Solving

25 = -25

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

Answer:

There are no values of b no solution that makes the equation true.

Step-by-step explanation:

what is (4x^2y^3)^2=

Answers

Answer:

16x⁴y⁶

Step-by-step explanation:

(4x²y³)² =

= 4²x²ˣ²y³ˣ²

= 16x⁴y⁶

What
is
the
solution
to
the
equation?
5x – 4 = 3x + 10

Answers

Answer:

x = 7

Step-by-step explanation:

5x - 4 = 3x + 10

Combine Like Terms

2x = 14

Divide

x = 7

Help me please!!!!!!!!!!!!!!!

Answers

Answer:

The answer is D

Step-by-step explanation:

There are 6 black circles and 2 red circles which could be written as 6 + -2, the positive sign from will turn into a negative bc if the -2, so then it would be 6-2=4

Solve 3x -12 = 24.
Please help!

Answers

Answer:

12

Step-by-step explanation:

3x - 12 = 24

Add 12 to both sides to make 3x the subject of the equation.

3x - 12 (+12) = 24 (+12)

3x - 0 = 36

3x = 36

Divide both sides by 3.

3x/3 = 36/3

x = 12

Please give brainliest, rate 5 stars, and thank. Thank you

The required solution to the given equation 3x -12 = 24 is x = 12.

What is the algebraic equation?

Algebraic equations are mathematical statements with a minimum of two terms containing variables or numbers that are equal.

The analysis of mathematical representations is algebra, and the handling of those symbols is logic.

The given equation is given in the question

⇒ 3x - 12 = 24

Add 12 to both sides of the above equation

⇒ 3x - 12 (+12) = 24 (+12)

⇒ 3x - 0 = 36

Apply the subtraction operation,

⇒ 3x = 36

Divide both sides by 3.

⇒ 3x/3 = 36/3

⇒ x = 12

Therefore, the required solution to the given equation 3x -12 = 24 is x = 12.

Learn more about the equations here:

brainly.com/question/10413253

#SPJ2

Help ASAP please and explain why ?!

Answers

Answer:

It is C, because to find volume you must use the formula l×w×h, or length times the width times the height. (cm^3)

Answer:

C

Step-by-step explanation:

Unlike area that's cm² because it's like A= L*W

Volume is cm³ because it's like A= L*W*H

Cual es el perímetro de un rectángulo, si se sabe que el largo mide 6 cm y su ancho, 4 cm?

Answers

Answer:

20

Step-by-step explanation:the trabslation is 'whats the perimiter of a rectanglr if its lenght is 6cm and its width is 4cm'

You want to buy a new hat that costs $9.20 on the price tag. How much
will you pay at the register if there is an 8.5% tax? Round to the nearest
cent. *

Answers

Answer:

$9.98 :)

Step-by-step explanation:

just multiply the tax (0.085) by the price ($9.20) then add the initial price ($9.20) to that.

9.98 because it is and the thing is like

-2/5 + 1/2 please help guys I really need it

Answers

Answer:the answer is 1/10

Step-by-step explanation:

How do I find the domain and range of a graph?​

Answers

The domain is the x-axis and the range is the y-axis.

To find the domain, you measure or count the widest part of this oval horizontally. So that is 3 units to the right of 0 and 3 units to the left of 0. I counted it exactly on the axis because that is the widest part of the oval.

To find the range, you again count or measure the widest part of the oval vertically. So that is 4 units above 0 and 4 units below 0.

Final Answer

D: -3 ≤ x ≤ 3

R: -4 ≤ x ≤4

HELPPPPPPPP
An angle formed by the intersection of two lines is obtuse. Could the lines be perpendicular? Explain.

Answers

Answer:

no

Step-by-step explanation:

because when lines are perpendicular, the angles are 90 degree angles.

I agree with that answer :):)

What are the solutions 2x^2-16x34=x^2-6x+10 check all of the boxes that apply

Answers

Answer:

x=−3+√563

or/and

x=−3−√563

Step-by-step explanation:

3^-4=????? HURRRRYYYYYYYYYYYYYYYYY

Answers

Answer:

Here’s the answer :)

Step-by-step explanation:

Answer:

[tex] {81}^{ - 1} \: or \: \frac{1}{81} [/tex]

Step-by-step explanation:

[tex] {3}^{ - 4} [/tex]

Apply rule :

[tex] {a}^{ - 1} = \frac{1}{ {a}^{1} } [/tex]

[tex] \frac{1}{ {3}^{4} } = \frac{1}{81} \: or \: {81}^{ - 1} [/tex]

In how many ways can 11 bowlers be
selected from 25 who came to a bowling ally?
using npr or ncr

Answers

Answer:

Yes ans = 27720. Total possibilities = C(4,1) * C(6,4) * C(11,6) = 27720.

10 pts
The price of a video game was reduced from $60 to $45. By what percentage was the price of
the video game reduced?

Answers

Answer: It was reduced by 25%

Step-by-step explanation: to go from $60 to $45, you would've gone down $15. 15, or $15, if 1/4 of 60, or $60. 1/4 also is 25%, so the price would have gone down by 25%.

I need help with these questions will give brainiest

Answers

Answer:1F= f(x)=3x+1.5y

1E=18

1A domain=3 range=1.5

Step-by-step explanation:

Dave is driving to Dallas, TX for the weekend from Austin, TX for the weekend. He is traveling along the tollway 130. The speed limit is 80 mph. There are approximately 1.6 kilometers in 1 mile. What is this limit in kilometers per hour?

Answers

We need to multiply the 80mph by the 1.6 to make it KPH

When done correctly we get the answer of 128KPH

The limit is 128kph

HOPE THIS HELPED. DONT FORGET TO MARK THIS AS THE BRAINLIEST ANSWER AND GIVE IT A 5 STAR SO OTHER PEOPLE CAN BE HELPED BY THIS ANSWER!! HAVE A NICE DAY!

Which choices are correctly written in scientific notation? Check all that apply
17.1 times 10 Superscript 3
8.05 times 10 Superscript 3
6.25 times 4 Superscript 3
4 times 10 Superscript negative 16
22.09 times 10 Superscript negative 9
3.03 times 10 Superscript negative 1
5 times 10 Superscript 10
3.44 times 1 Superscript 10

Answers

8.05 times 10 Superscript 3 22.09 times 10 Superscript negative 9 5 times 10 Superscript 10 3.44 times 1 Superscript 10

I was reading a book last night that said about 2/3 of Americans attend college, and about 40 percent of those actually graduate. So, about what percent of Americans actually earn college degrees?​

Answers

Answer:

26.67% Of Americans earn college degrees.

Step-by-step explanation:

[tex]\frac{2}{3} *40 = 26.67[/tex]

Please help Factor the expression using the GCF the expression 32z-48 factored using the GCF is

Answers

Answer:

16(2z -3)

Step-by-step explanation:

There are two ways of solving this problem.

List out the factors of the numbers:

32z - 48

= 32 * z - 48

32= 1, 2, 4, 8, 16, 32

48 = 1, 2, 3, 4, 6, 8, 12, 16, 24, 48

the largest common factor that both numbers have in common is 16,

So factoring the equations means the one has to divide the equation by 16 and write it outside of the parenthesis.

16 * ( 2 * z - 3)

16(2z -3)

Another way of solving the problem:

prime factorize the number:

32 = 2^5

48 = 2^4 * 3

Both numbers have 2^4 as their largest factor in common meaning that that is their GCF. 2^4 is 16.

Now factor out 16 and write it on the outside of the parenthesis.

16 * ( 2 * z - 3)

16(2z -3)

Answer:

16(2z -3)

Step-by-step explanation:

I am not sure what the answer is to this question. | x - 1 | + 5 = 2 can you please help?

Answers

Answer:

The answer is 4

Step-by-step explanation:

I hope it helps I had to do the math

Simon is making a poster about friendship in his art class. He divides his poster into 3 equal parts. Simon writes the names of his friends all over each part. Simon uses 1 part for his neighborhood friends and 1 part for his friends from school.
What fraction of the poster does Simon use for his friends from school?

Answers

Answer:

1/3

Step-by-step explanation:

The most important thing to remember is that the poster is divided into three equal parts and 1 part of it is for his neighborhood friends and another one part of it is for his friends from school. The denominator would be three and the numerator would be the 1 part he uses for his friends from school.

24 - x = 32 , what is it he answer to this please !

Answers

Answer:

- 8

Step-by-step explanation:

Step 1:

24 - x = 32

Step 2:

- x = 32 - 24

Step 3:

- x = 8

Answer:

x = - 8

Hope This Helps :)

are u a freak(math wise)​

Answers

Answer:

nope

Step-by-step explanation:

because i am dumb

nope, I am even dumber.

please help me out ! I am stuck

Answers

Answer:

5x =324

Step-by-step explanation:

[tex]5x \div 9 =36\\\\5x = 36\times 9\\\\5x = 324[/tex]

Solve for 3x + 5(x - 2) = 14​

Answers

distribute the 5 throughout the x-2
3x+ 5x - 10 = 14
8x-10= 14
add 10 to both sides
8x=24
divide 8 both sides
x = 3

Another one help please

Answers

there must be subtraction of multiplication of each two diagonal,

|G|=[12×2-(-6)×0]

=(24+0)

=24ans

Answer:

Option B). 24

Explanation:

Refer to the attachment for your solution.

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