Mathematics High School

how do i use the substitution method for these equations
y=3x+4
y=5x+12

Answers

Answer 1

Answer:

hello there mate

Step-by-step explanation:

Answer 2
Good day !
In this equation , you can solve the two equations directly .
You have been given the value of y In both cases.
So 3x+4=5x+12
=3x-5x=12-4
-2x=8
X=-4




Sorry if it’s incorrect!

Related Questions

Will Mark Brainliest

Solve each system by elimination. Show your work

3х – 10 y = 14
3х – 9y = 15

Answers

Answer:

subtracting both equations

3x-10y=14

3x-9y=15

- - =-

_________

0-y=-1

y=1

then putting the value of y in first eqn

3x-10×1=14

3x=24

x=8

so x is 8and y is 1

4x³y²/4yx²•y⁴


I need to simplify that ^^

Answers

hopefully this helps

solve for N
3(3n – 4) = -48

Answers

9n - 13 = -48
+13

9n = -35
/9 /9

N= -3.888

Answer:

n=-4

Step-by-step explanation:

3(3n-4)=-48

First use the distributic property and then add and divide from both sides of the equation.

9n-12=-489n=-36n=-4

A rectangular book measures 4 x 7. What is the length of its
diagonal?

Answers

pythagorean theorem tells us a^2 plus b^2 is c^2, in this case a would be 4, b is 7, and c is the diagonal. 16+49 is the c^2, so the diagonal is about 8

A rectangular book measures 4 x 7, the length of its diagonal is √65.

Pythagorean theorem states that in a right triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides.

In mathematical terms, if a and b represent the lengths of the two shorter sides (also known as legs) of a right triangle, and c represents the length of the hypotenuse, then the Pythagorean theorem can be expressed as:

a² + b² = c²

Given:

Base = 4

Length = 7.

To determine the length of diagonal by using  Pythagorean  theorem.

Diagonal² = Base² + Length²

Plugging the values in Pythagorean  theorem.

Diagonal² = 4² + 7²

Diagonal = √(16 + 49) =√65.

Therefore, the length of diagonal of book is √65.

Learn more about Pythagorean  theorem here:

https://brainly.com/question/14930619

#SPJ2

Solve for the missing variable plzz

Answers

Answer:

3

Step-by-step explanation:

What is the value of a? ​

Answers

Answer:

9

Step-by-step explanation:

7th grade math please help me will give brainliest

Answers

Answer: 67.27

Step-by-step explanation:

7.1 x 7.1 for the square = 50.41

7.1 divided by 2 = 3.55

3.55 x 4.75= 16.86

Normally here you would divide by 2, but you don’t need two because there is 2 triangles that are the same

Add the 50.41 and the 16.86 and you have your answer!

Answer:

16.86 square units

Step-by-step explanation:

I think this is the answer.

-6.4 = z/6
what does z =?​

Answers

Answer:

-38.4

Step-by-step explanation:

Multiply both sides by 6 to get rid of the /6 then you would get z alone

Answer:YOUR ANSWER IS.......

35 HOPE U HAVE A GOOD DAY <3

Step-by-step explanation:THANK YOU FOR YOUR TIME!

Translate the following into an algebraic expression: "five less than the product of 7 and
the square root of a number" can be written as:
05-713
o 5 - 70
O TX-15
073-5

Answers

Answer:

7√x - 5

Step-by-step explanation:

Let the number be x

The product of 7 and  the square root of a number is expressed as;

7 * √x

= 7√x

five less than the product of 7 and  the square root of a number will be expressed as;

7√x - 5

Hence the required expression is 7√x - 5

n + 10 = 8 + 4

find the value of n. ​

Answers

Answer:

n=2

Step-by-step explanation:

8+4=12

12-10=n

n=2

N is equal to 2. 8+4 is 12 which leaves you with n+10=12 so then you subtract 10 from 12 which gives you n=2

7th grade math please help

Answers

Answer:

3.8 x 4.5

+

3.8 x 5.1 divided by 2!

Step-by-step explanation:

You can turn it into 2 squares, or follow the hints!

Look at the data points on the graph

Is this relationship a function?

Answers

It issssssssssssssssss 1,1
No, usint the vertical line test, the dots on 2A and 2B will line up with each other, proving it isnt a function.

simplify m^12/m^3 pleaseeeee help meeeee

Answers

Answer:

m^12-3

m^9 is the answer

Step-by-step explanation:

Answer

M^9

Step by step

(trigonometry) write the tangent ratios for angle P and angle Q. if needed reduce fractions

Answers

Answer:

Step-by-step explanation:

tan P = [tex]\frac{16}{12}[/tex] = [tex]\frac{4}{3}[/tex]

tan Q = [tex]\frac{3}{4}[/tex]

The blue dot is at what value on the number line?
+
+
3
+
9
?

Answers

Answer:

it is answer is -3,

please mark brainlest

Answer:

It's -3

Step-by-step explanation:

You subtract by 3 every time you go down the number line. So if the highlighted line is 2 lines from 3 it is -3.

Solve This Proportion Y/23= -3/4 ​

Answers

Answer:

y = -17.25

Step-by-step explanation:

y/23 = -3/4

by cross multiplication ❌ ;;;

4×Y = 23× (-3)

4y = (-69)

y = -69/4

y = -17.25

I hope that this answer helps you

Write the standard equation of the circle.

I’ll give brainliest!

Answers

The answer is 10 you’re welcome

What is the answer to this?

Answers

Answer:

The answer is (1,-5)! Try using Desmos graphing calculator next time as well :)

Step-by-step explanation:

please help me asap !!​

Answers

Answer:

obtuse is the anwer

obtuse i think, should be did you get it right :)

I need help with this

Answers

Answer:

the second one, third one

Step-by-step explanation:

you can expand using the distributive property

Convet: 200m into cm
and km​

Answers

Answer:

200m = 20,000 cm

200m = 0.2 km

Step-by-step explanation:

2(x-1)=10
Please help!!

Answers

Answer:

x=6

Step-by-step explanation:

2(x-1)=10

2x-2=10

2x=12

x=6

Answer:

6

Step-by-step explanation:

Divide both sides by 2.

x-1 = 5

Add 1 to both sides.

x = 6

what is the sum of the 14th square number and the 6th square number?

Answers

14th square number = 196

6th square number = 36

Select the correct answer.
If the zeros of a quadratic function are 3 and 8, what are the factors of the function?
ΟΑ.
(X + 8) and (x - 3)
OB.
(x - 8) and (x + 3)
O C.
(X + 8) and (x + 3)
OD.
(x - 8) and (x-3)

Answers

Answer:

OD

Step-by-step explanation:

The zero x=8 will make the factor (x-8) = 0 and the zero x=3 will make the factor (x-3) = 0.

so it's (x-8) and (x-3)

write an expression for 5 less than x

Answers

Answer:

x-5

Step-by-step explanation:

Evaluate the expression 12 - 3y +420-4) for y = 3.
2

Answers

Answer:

56

Step-by-step explanation:

A jar contains 21 marbles: 8 white, 3 green, and 10 red. Write the described ratio in simplest form.

A. number of white marbles to number of green marbles.

Answers

Answer:

The question you posted was a bit confusing for me, but I'm assuming that you want the simplified ratio of the number of white marbles to the number of green marbles.

The answer would be 8:3.

Step-by-step explanation:

There are 8 white marbles and 3 green marbles, so you get 8:3. And since 8 and 3 are relatively prime, no simplifying is needed.

The answer is 8:3.

The coach of a track team is standing on
the outside of a circular track. What is the
maximum distance he can be from one of
his track teammates if the distance from the
coach to the center of the track is 52.4
· feet? Explain how you know your answer is
correct.

Answers

,.....................

At her restaurant .Yolanda open 285 cans of tomato sauce .She need to use 4 can of for one pan of lasagna how many pans of lasagna could yolanda make if she uses all if she all the cans what is the answer in a mixed numder

Answers

Answer:

71 1/4 pans of lasagna

Step-by-step explanation:

4 cans of tomato sauce = 1 pan of lasagna

285 cans of tomato sauce = x pan of lasagna

4 = 1

285 = x

Cross product

4*x = 285*1

4x = 285

x = 285/4

x = 71 1/4 pans of lasagna

solve x for triangle

Answers

Answer:

x = 69

Step-by-step explanation:

By exterior angle theorem:

x° + 43° = 112°

x° = 112° - 43°

x ° = 69°

x = 69

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