Mathematics High School

B.
-2x + 8 = y
3x - y = 22

How do I solve it

Answers

Answer 1

answer

x=6, y=-2

explanation

-2x + 8 = y -------equ 1

3x - y = 22 -------equ 2

u can use any of the simultaneous equation method

using elimination method

rearrange first from -------equ 1

-2x+8=y

-y-2x=-8

multiple through by -1

y+2x=8 -------equ 3

rearrange first from -------equ 2

3x-y=22

-y+3=22 ------equ 4

equate 3 and 4, adding them together

y+2x=8 -------equ 3

-y+3=22 ------equ 4

0+5x=30

5x=30

x=6------equ 5

replace 6 for x in any equation

using -------equ 3

y+2x=8

y+2(5)=8

y+10=8

y=8-10

y=-2

Answer 2

Answer:

(x, y)=(6, -4)

Step-by-step explanation:

-2x+8=y

3x-y=22

Substitute the given value of y into the equation 3x-y=22

3x-(-2x=8)=22

Solve the equation for x

x=6

Substitute the given value of x into the equation 3x-y=22

3x6-y=22

Solve the equation for y

y=-4

The possible solution of the system is the ordered pair (x, y)

(x, y)=(6, -4)

Check if the given ordered pair is the solution of the system of equations

-2x6+8=-4

3x6-(-4)=22

Simplify the equalities

-4=-4

22=22

Since all of the equalities are true, the ordered pair is the solution of the system

(x, y)=(6, -4)

Related Questions

Chris spent half of his money on a pair of headphones. Then he spent half of his remaining money on CDs. Finally, he spent his remaining $13.00 on a book.

Answers

Answer:

52

Step-by-step explanation:

you just have to take the 13 and work backwards, so double it to get 26 and then double 26 and youll get 52:)

The ____ Is the distance around a circle.
area
radius
diameter
circumference​

Answers

Answer: circumference

Step-by-step explanation:

Answer:

circumference

Step-by-step explanation:

N/A

Which expression is equivalent to?

Answers

I think it is the third one from the top

what is 2^2 pls help me

Answers

Answer:

That'd be 4 :)

Step-by-step explanation:

What is the answer to the problem: x/2 - 1/5= x/3 + 1/4

Answers

Answer:

27/10

Step-by-step explanation:

x/2-1/5 = x/3+1/4

x/2-x/3 = 1/4+1/5

(30x-20x)/60 = (15+12)60

10x = 27

=> x = 27/10

Answer: x=  27/10

                       decimal form is 2.7

Step-by-step explanation:

simplify both side of equation then isolate the variable

                       :)

what is a factor for -20?​

Answers

Answer:

1 ,2,4,5,10,-1,-2,-4,-5,-10,20

Answer:

factors are 2 and 5.

Step-by-step explanation:

Factors are numbers which you can multiply together to get another number. For Example : The numbers 2 and 3 are factors of 6 because 2 x 3 = 6. A number can have many factors! Example : 2 and 4 are factors of 8, because 4 x 2 = 8. Also 1 and 8 can also be factors of 8, because 1 x 8 = 8.

on prime factorization, we get the factors of 20 as,

2 x 2 x 5 = 20.

Essentially, to factor a negative number, find all of its positive factors, then duplicate them and write a negative sign in front of the duplicates. For instance, the positive factors of −3 are 1 and 3.

-2 x 2 x 5 = -20

2 x 2 x -5 = -20

i really need help.......

Answers

A had it before good luck

Answer:

it will option B hope it helps

3) Pappa’s pizzas are cut into 5 slices. Andrew ate 4 slices and Sean ate 3. How many pizzas did they eat altogether? Write an expression to represent the situation.

Answers

Answer:

they at 1 and 2/5 pizzas because 4+3=7 and if there is only 5 peices in each pizza that makes 2 pieces of a 2nd pizza being eaten

Step-by-step explanation:

what is the area of the house type shape outlined in blue this is a maths test could u please show working if u can answer it bc we must show working plz I could rly use the help

Answers

Answer:

[tex]110.5^{2}[/tex]

Step-by-step explanation:

first lets devide this into two like lets make it a rectangle and a triangle. so the area for the rectriangle is 5 x 13 = 65.

then the the area of the triangle is 7 x 13 divide by 2 = 45.5

i got the seven as height is when i substract 5 from 12

so now add both 65 + 45.5 = 110.5

I WILL GIVE BRAINLIST NEED HELP ASAP

Triangle ABC is isosceles with m(∠B) = 135°. What is m(∠A)?

A
22.5°

B
45°

C
90°

D
135°

Answers

Answer:

a is the correct answer brainliest plz

Answer:

fbbhvbskjdbjsbkbdkfbvkdbvvbkdbvkjbdvkjsbvjbv

Step-by-step explanation:

The point (-6,-2) is located in quadrant

Answers

Step-by-step explanation:

The point is located in the second quadrant because x is negative and y is positive.

Answer:

Quadrant 3

Step-by-step explanation:

-4x=-3y-5 into standard form

Answers

Answer:

4x-3y=5

Step-by-step explanation:

Answer:

5=3y+4x

Step-by-step explanation:

Step 1:

-4x = 3y-5

+4x   +4x

Step 2:

0 = 3y+4x-5

+5            +5

5=3y+4x

How many threes are in five-eighths?


Answer in fractions please!

Answers

Step-by-step explanation:

10|16 I think.........................

PLEASE HELP ASAP! ILL MARK BRAINLEST i feel like i’m missing one

Answers

Answer:

The ans is correct. But I think C is also correct.

Step-by-step explanation:

What is the slope of the line?

Answers

5/8 nxnznsn Josh’s said McManus McDonald’s 789 week

2/3

i dont know how to explain it all i learned was rise over run (rise/run) just like y/x but its easier to rmrmber

Plsssss helpppppppppp meeeeeeeeee

Answers

Answer:

x = 14, y = 37

Step-by-step explanation:

The angle vertical to (9x + 12 )° and 3x are same- side interior angles and are supplementary, sum to 180°, then

9x + 12 + 3x = 180

12x + 12 = 180 ( subtract 12 from both sides )

12x = 168 ( divide both sides by 12 )

x = 14, so

3x = 3 × 14 = 42

3x and 4y - 10 are adjacent angles and supplementary, then

3x + 4y - 10 = 180

42 + 4y - 10 = 180

4y + 32 = 180 ( subtract 32 from both sides )

4y = 148 ( divide both sides by 4 )

y = 37

Write the equation of the line that is parallel to y+2=5(x-1) and passes through the point (-1, 0) .
( 50 points )

Answers

Answer: y=2x-3

Step-by-step explanation: I looked it up.

Your teacher is giving you a test that has 30 questions and is worth 200 points. Some questions are worth 5 points and some are worth 10 points. How many of each question are on the test?

Answers

Answer:

20 5-point questions and 10 10-point questions

Step-by-step explanation:

Do any one know the answer 8X + 4 - 6x + 7*

Answers

Answer:
2x+11

Explanation: it’s the answer:)
-2x+11 is what I got

1. If you have a McDonalds order where the subtotal comes to
$29.46 and you give a 15% discount coupon, how much will the
new subtotal be?

Answers

The total is 25.04 dollars becuase 15 percent of 29.46 is 4.42 and subtract that and that’s what u get
25.04 because 15% of 29.46 is 4.42

Can somebody help me ill give u brainlist

Answers

90 degrees hope this helps :)
Your answer is 90

You can see that there’s a right angle on the right side of the triangle.
Or, if you want to be more specific:

Since two triangles are congruent,
Angle w=62

So, 180-(28+62)
= 180-90
=90

Under his cell phone plan, Noah pays a flat cost of $66.50 per month and $4 per gigabyte. He wants to keep his bill under $80 per month. Which inequality can be used to determine gg, the maximum number of gigabytes Noah can use while staying within his budget?

Answers

Answer: gg < 3.375

Step-by-step explanation:

From the question, we are informed that Noah pays a flat cost of $66.50 per month and $4 per gigabyte and that he wants to keep his bill under $80 per month.

The inequality that can be used to determine gg, the maximum number of gigabytes Noah can use while staying within his budget will be:

66.50 + 4gg < 80

4gg < 80 - 66.50

4gg < 13.50

gg < 13.50/4

gg < 3.375


A house purchased for $220000 has it's value grow at a constant rate of 4%. Determine the approximate
value of the house 5 years after purchase

Answers

Answer:

the answer is 264000.....

Answer:

264,000

Step-by-step explanation:

4% of 220000 is 8800

8800 x 5 = 44000

220000 + 44000 = 264000

someone help me with this please

Answers

Answer:

Reciprocal

Multiplicative inverse

Additive inverse

Reciprocal is the answer lol

simplify: 5w(1-8h)+12hw+5w+3-w

Answers

Answer:

−28hw+9w+3

Step-by-step explanation:

5w(1-8h) = 5w-40wh

+12wh = -28hw

-28hw+5w+5w = -28hw+10w

-w = -28hw+9w

+3 = -28hw+9w+3

PLEASE HELP!!!!!!!!!!

Answers

Answer:

3

Step-by-step explanation:

PLEASE HELP ME IT IS AN EMERGENCY!!!!!!!!! I WILL MARK BRAINLLIEST FOR THE CORRECT ANSWER!!!!!!!!!!!!

When the original price and discounted prices are known, how can we find the percent markdown?

Answers

Step-by-step explanation:

The amount that you decrease the price by can be expressed as a percent of the selling price, known as the markdown rate.

13x-12 = 7x-6
What is the value of x?

Answers

Answer:

x=1

Step-by-step explanation:

13x-12=7x-6

13x-7x=-6+12

6x=6

x=1

I hope this helps, have a great day! :) -wilzW

After solving the equation, the value obtained for x is equal to 1.

What is an equation?

Equations are mathematical expressions that have two algebra on either side of an equal (=) sign. The expressions on the left and right are shown to be equal to one another, demonstrating this relationship. L.H.S. = R.H.S. (left-hand side = right side) is a fundamental simple equation.

As per the given equation in the question,

13x - 12 = 7x - 6

13x - 7x = -6 + 12

6x = 6

x = 6/6

x = 1

Therefore, the value obtained for x will be equal to 1.

To know more about an equation:

https://brainly.com/question/10413253

#SPJ2

PLZ ANSWER QUICK IT WILL HELP A LOT!

Answers

Answer:

a

Step-by-step explanation:

HURRY
1/12 is the same as 1÷12. What is the exact quotient in decimal form of 1÷12?

Answers

Answer: Yes 1/12 is the same as 1 ÷ 12

decimal form is 0.083333333333333333(3 is repeating)

Step-by-step explanation:

Answer:

0.08333333333

Step-by-step explanation: since i helped can i have brainlist please :D

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