Help with substitution

Help With Substitution

Answers

Answer 1

Answer:

x=5

y=1

Step-by-step explanation:

First, put  x=2y+3 inside 2x, which is the top equation. This will come out as 2(2y+3)-3y=7.

If you distribute, it would become 4y-6-3y=7. Then you have to combine like terms to get y+6=7

Add 6 on both sides to get y=1.

Put the value of y, which is 1 into the top or bottom equation. I would prefer the bottom equation because it is simpler. The equation would come out as

x=2(1)+3

x=2+3

x=5

Answer 2

Answer:

The answer will be listed below.

Step-by-step explanation:

Since there is an x= 2y+3, you can plug that equation into x in the equation 2x-3y=7. You must find y first.

2(2y+3)-3y=7

Now distribute 2 and you will get 4y+6-3y=7.

Combine 4y and -3y and have an equation of y+6=7.

Subtract 6 to both sides and you will have an answer of y=1

Now since you found y, now find x. To find x, substitue y=1 into any equation listed (you'll get the same answer anyways). Let's use x=2y+3 as an example. Substitute the 1 for y.

x=2(1)+3

Now you have x=2+3, which is 5.

x=5 and y=1.

To make sure this is correct, plug both the numbers into an equation, let's use the first one now.

2(5)-3(1)=7

7=7

In the end, the euqtaion equals 7, which means the answer is correct.


Related Questions

write the equation in slope-intercept form. y - 2 = 6 (x + 1)​

Answers

Answer:

y=6x+8

Step-by-step explanation:

Write in slope-intercept form, y=mx+b.

Is the amount of time it takes to download a file from the internet discrete or continuous?

Answers

Answer:

The amount of time that is spent downloading internet files is a continuous measurement and is not discrete, because it will always follow the same length of time that is estimated to download, but due to changes of internet WiFi connectivity and other background programs this can all affect the speed of the computer programs responsible for downloading the files.

Answer/Step-by-step explanation:

The amount of time that is spent downloading internet files is a continuous measurement and is not discrete, because it will always follow the same length of time that is estimated to download, but due to changes of internet WiFi connectivity and other background programs this can all affect the speed of the computer programs responsible for downloading the files.

What number represents the same amount as 8 hundreds + 10 + 0 ones?

Answers

Answer:

810

Step-by-step explanation:

hope it help you ☺☺....

What are the solutions of 8x2 = 6 + 22x? Check all of the boxes that apply.

x = -3

x =

x = 3

x = 6

Answers

Answer:

x = 3 x = ‐1/4

Step-by-step explanation:

Was right on the quiz

Answer:

x = 3 x = ‐1/4

Step-by-step explanation:

the first one is also right!!

What is the slope m in the equation y = -2x + 5

Answers

Answer:

m = -2

General Formulas and Concepts:

Slope-Intercept Form: y = mx + b

m - slope

b - y-intercept

Step-by-step explanation:

Step 1: Define function

y = -2x + 5

Step 2: Break function

Slope m = -2

y-intercept (0, 5)

PLEASE HELP!!!
Which expression is equivalent to 4sin^2(x) - 8sin^2(x/2)

Answers

Answer:

4(sin^2(x) -2sin^2(x/2))

Step-by-step explanation:

Matter of factorising

Answer:

It is 4(cos(x)-cos^2(x))

Step-by-step explanation:

I used an app on chegg and found that this is the only answer that is equivalent

i will brainlest this don't answer if out the real answe thank you

You will repost if you take my point this is not free comment if you have a question

Answers

Answer:

1) Product of 2 x 3/5 is 6/5 or 1 and 1/5.

2) 20/9 or 2 and 2/9

3) 15/8 or 1 and 7/8

4) 15/6 or 2 and 3/6 or 2 and 1/2

5) 6/4 or 1 and 2/4 or 1 and 1/2

Step-by-step explanation:

You multiply the whole number by the numerator (top number) and then divide the result by the denominator(bottom number). Afterward, simplify the fraction if you can, for example, 6/9. Both the numerator and denominator can be divided by 3. Therefore, the answer to that example is 2/3.

Answer:

1) Product of 2 x 3/5 is 6/5 or 1 and 1/5.

2) 20/9 or 2 and 2/9

3) 15/8 or 1 and 7/8

4) 15/6 or 2 and 3/6 or 2 and 1/2

5) 6/4 or 1 and 2/4 or 1 and 1/2

Step-by-step explanation:

Which one is better? Knight or bishop? Why? (Chess).

Answers

Answer:

knight

Step-by-step explanation:

because he is a knight

What is the quotient of 35, 520 = 96?
O 37
O38
O 370
O 380

Answers

Answer:

The answer is 370 hoped that helped

How do you do this question?

Answers

Answer:

½√2

Step-by-step explanation:

∑ₙ₌₀°° (-1)ⁿ π²ⁿ / (4²ⁿ (2n)!)

∑ₙ₌₀°° (-1)ⁿ (π/4)²ⁿ / (2n)!

Using the Taylor expansion for cos x:

cos (π/4)

½√2

Which equation represents the line that passes through
the point (10, 1) and is perpendicular to the graph of
2x - y = 7?

Answers

Answer:

x+2y=12

Step-by-step explanation:

I used DESMOS graphing calculator. I highly recommend it for problems like this.

how many solutions does this equations have 3(2.4x+4)=4.1x+7+3.1x?

Answers

Answer:

3(2.4x+4)=4.1x+7+3.1x has no solutions.

Represent the arithmetic series using the recursive formula. 94, 89, 84, 79, …
pLeAsE hUrRy

Answers

Answer:

The answer is 5

Step-by-step explanation:

Hope it helps <3 c:

ITS EASY I PROMISE PLEASE NOW

Answers

Answer:

I'm pretty sure the answer is B

Step-by-step explanation:

Hope this helped :) Sorry if its wrong

Answer:

b

Step-by-step explanation:

I like to think of it as this:

If the circle is filled, it is [tex]\leq or \geq \\[/tex] (more)

If not, it's < or >

The arrow points in the direction the line is going.

In this graph, the line is going to the left. So is the symbol.

If the base of a triangle is doubled then new area= ________ times old area

Answers

Answer:

As base and height are becoming double the new area is 4 times the original area. When the length of the sides of a triangle double, the area becomes quadruple.

HELPPPPOP PLEASEEE ILL GIVE BRAINLIEST!!!!


question 4. Solve each compound inequality.

Answers

Answer:

-7/2≤x<3

Hope this helps!

Answer:

Step-by-step explanation:

bvcvcvcbvcbvcbvbvcv

Drag the tiles to the correct boxes to complete the pairs. Match the values based on parallelogram ABCD, shown in the figure. length of value of m∠DAB value of 56 arrowRight 4 arrowRight 44 arrowRight 2 arrowRight

Answers

Answer:

56 ---> m< DAB

4 ---> length of line BC

44 ---> value of y

2 ---> value of x

Step-by-step explanation: edmentum test answer

The length of BC is 4 units, the value of y is 44, a measure of the angle DAB is 56 degrees, and the value of x is 2.

What is parallelogram?

In two-dimensional geometry, it is a plane shape having four sides, in which two pairs of sides are parallel to each other and equal in length. The sum of all angles in a parallelogram is 360°.

The question is incomplete.

The complete question is in the picture, please refer to the attached picture.

We have:

Parallelogram ABCD

From the figure:

6 - x = x + 2

2x = 4

x = 2

Length of BC = 6 - x = 6 - 2 = 4 units

12 + y = 100 - y

y = 44

Angle DAB = 100 - 44 = 56 degrees

The value of x = 2

Thus, the length of BC is 4 units, the value of y is 44, a measure of the angle DAB is 56 degrees, and the value of x is 2.

Learn more about the parallelogram here:

brainly.com/question/1563728

#SPJ2

please help with this question

Answers

Answer:

Rotation

Step-by-step explanation:

Rotation around the origin I believe

A new cell phone has a purchase price of $225. With the extended warranty, the total cost comes to $289. What
percent of the purchase price is the price of the warranty?
a. 28%
b. 22%
C. 25%
d. 20%

Answers

Sorry, I am not sure but it is either A. 28% or B. 22%

Answer:

The answer would be Letter A which is 28%

Step-by-step explanation:

Took the practice on edge 2020 and got it correct.

f(x) = -7x + 1, find f(-2) x
f=-2

Answers

Okay, so basically just plug -2 in for x in the equation and solve.

-7(-2) + 1

Multiply first

14 + 1

Now add

15

In triangle ABC, the measure of angle B is 50 degrees. Give possible values for the measures of angles A and C if ABC is a right triangle.

Answers

9514 1404 393

Answer:

A = 90°, C = 40°A = 40°, C = 90°

Step-by-step explanation:

In a right triangle one angle is 90° and the other angle is the complement of the acute angle given.

Angles A and C are not specified, but we know the other two angles are 40° and 90°. The values can be assigned two ways:

  A = 90°, C = 40°

  A = 40°, C = 90°

Please help it’s due

Answers

4 = 130

2 = 50

1 = 90

3 = 40

:)

Who knows the answer to this

Answers

x=-15/2 , 4

I'm sorry if I'm wrong

need someone’s help with this please!!!

Answers

option 4 you’re welcomeee

Use the given conditions to find the exact value of the expression.

Answers

9514 1404 393

Answer:

  (7 -24√3)/50 = 0.14 -0.48√3

Step-by-step explanation:

Sine is negative and cosine is positive in the 4th quadrant, so ...

  sin(α) = -√(1 -cos(α)²) = -√(1 -576/625) = -7/25

Then the cosine of the angle sum is ...

  cos(α +5π/6) = cos(α)cos(5π/6) -sin(α)sin(5π/6)

  = (24/25)(-√3/2) -(-7/25)(1/2)

  = (7 -24√3)/50 = 0.14 -0.48√3

If f(x) = 1.2-3.4x what is the value of f(5.1)

Answers

Answer:

−f(5.1) =  16.14

Step-by-step explanation:

Hope this helps!  Stay safe!

Which of the following equations demonstrates the Identity Property of One? A. 3 - 2 = 1 B. 4 • 1 = 14 C. 1 • b = b D. 0 + 1 = 1

Answers

Answer: C

The identity property of 1 is that any number multiplied but it remains the same.

Hence

1 x b = b

If the ordered pair (a, b) satisfies the inequality. y > x-4, three of these statements are
true. Which statement is NOT true?

Answers

Answer:

If you subtract 4 from a, it will be greater than b

Step-by-step explanation:

Ok, so in order to solve this, it would be easier to substitute (a,b) into the equation:

b>a-4

Ok, next, you just have to work out each individual question to see which one is incorrect. You can immediately know it is the first one, and this is because we know that B is larger in this equation, but the problem says that subtracting 4 from a would be greater than b. This is incorrect, b is greater than 4-a, so the top left would be your answer.

Hope this helps!  

Which fraction is equivalent to 2/3 explain

Answers

Answer:

4/6, 8/12, 20/30

Step-by-step explanation:

They are equivalent to 2/3, because they can all be simplified to 2/3.

For example, 2 x 2 = 4 and 2 x 3 = 6; this gives me 4/6. I multiplied 2/3 by 2/2.

SO it can also be 2/3 = 4/6= 6/9 = 8/12 = 10/15 = 12/15 = 15/18 = 18/21 = 21/24 etc.

~hope it's right

4/6 is equivalent to 2/3
If you times both numbers by 2 you get the answer
2/3
x/x
2/2
——-
4/6

What value of a, b, and c make this equation true?

Answers

Answer:

I think you need to know the value of X to get this answer.

Step-by-step explanation:

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