Mathematics High School

Y=4-2x 3y-2x=4 solve using substitution

Answers

Answer 1

Answer:

x=1 y=2

Step-by-step explanation:

y=4-2x             3y=4+2x

3*(4-2x)=4+2x

12-6x=4+2x

12-4=2x+6x

8x=8

x=1

y=4-2*1

y=2

Answer 2
First turn the equation y=4-2x into a y=Mx+b formula. It would be y=-2x+4. Then plug it in into the y on the second equation. I’d be 3(-2x+4)-2x=4. Then solve. The answer is x=1. Hope it helped. :)

Related Questions

Help please ASAP rn

Answers

Answer, population: 359 million

Answer:

Step-by-step explanation:

It went up 98 ten-tousandth, from 1950 to 1990 divide 2030, by 1990 and then multiply that answer by 98 ten-tousandth

Savings Accounts
Alyssa starts with $30 and saves $5 each week. Bill has $16 and saves $7 each
week. At what week will Alyssa and Bill have the same amount of money?

Answers

Answer:

7  weeks

Step-by-step explanation:

Given data

Alyssa starts with $30 and saves $5 each week

let the number of weeks be x

y= 30+5x----------1

Bill has $16 and saves $7 each

week.

y= 16+7x----------------2

equate 1 and 2

30+5x= 16+7x

30-16= 7x-5x

14= 2x

x= 14/2

x= 7  weeks

Matthew went to the store to buy some of the ingredients for Indian pudding for his mother. He bought cornmeal ($1.74), cinnamon ($2.10), milk ($2.95), and eggs ($1.52). How much did Matthew spend? How much change would Matthew receive if he gives the cashier a $20 bill?

Answers

Answer:

8.04 and he would have 11.96 left over

Step-by-step explanation:

if you know what’s going on pls help thanksss

Answers

basically u are representing the graphs below in symbols and words if that makes any sence

Answer:

1. > less than

2. =< (I can't find the symbol for this but a line should be under the < and thats it) Greater than or equal to

3. < greater than

4. >= less than or equal to

What is the value of 3x^2– 7x + 9 when x = 4?

Answers

Answer:

29

Step-by-step explanation:

just substitute x with 4 in the equation :)

6. In a vegetable store, a customer paid $8.80
for 3 pounds of tomatoes and 5 pounds of
potatoes. A second customer paid $15.15
for 7 pounds of tomatoes and 6 pounds of
potatoes. What is the positive difference in the
price per pound of tomatoes and potatoes?

Answers

The Price of 1 pound tomato is $1.35 and Price of 1 pound potato is $0.95. The positive difference in the price per pound of tomatoes and potatoes is $0.40


~ hopes this help!

Is 4 a solution of 7 < 5x – 16

Answers

Answer:

no

Step-by-step explanation:

7 < 5*4 - 16

7 < 20-16

7 <4

Answer:

[tex] x > \frac{23}{5} [/tex]

Step-by-step explanation:

[tex]7 < 5x - 16 \\ - 5x < - 16 - 7 \\ - 5x < - 23 \\ [/tex]

[tex] \boxed{Answer:{\boxed{\green{= x > \frac{23}{5}}}}} [/tex]

The area of a square is given by x2, where x is the length of one side. Mary's original garden was in the shape of a square. She has decided to double the area of her garden.

Answers

x4 you square areas.

the table shows a summary of the number of spots counted on 20 ladybug calculate the mean number of spots per lady bug

Answers

Answer:

bcbdjdsjxbxifjfbdbdbbxbxhxhdhdhbdbdbxbxbxbxbbxnxnxnxx

Lin runs 12 laps around a track in 15 minutes.

A. How many minutes per lap is that?

B. How many laps per minute is that?

C. If Lin runs 20 laps at the same rate, how long does it take her

Answers

Answer:

it will take 25.2 minutes for Lin to run 21 laps

Step-by-step explanation: give crown plsplsplsplsplsplsplsplsplspls, also have a good day!

Simply 8t + 6r - 3t + 2r

Answers

Answer: 8r+5t

Step-by-step explanation:

8t + 6r - 3t + 2r

8t-3t= 5t

6r+2r=8r

= 8r+5t

Answer:

The answer would be 8r + 5t

Please help if you can, thanks

Answers

Answer:

what does the picture say

Find a ratio for the tangent of 32

Answers

Answer:tan c

Step-by-step explanation:

Sarah changed the quadratic function x^2 - 8x+10 from
standard form to vertex form using the method
of completing the square. What number did Sarah add to
both sides of the equation during the process?
a. -8
b. 16
C. 10
d.-4

Answers

Answer:

is d because the vertex is not helping the square

Step-by-step explanation:

PLEASE NEED HELP

Large gear has 28 teeth, Small gear has 14 teeth. If the large gear is turning at 15 mph, how fast is the small gear turning?

Answers

Answer:

The small gear would be spinning at 7.5MPH

The price of a technology stock was 9.57 yesterday. Today, the price rose to 9.66 . Find the percentage increase. Round your answer to the nearest tenth of a percent

Answers

Take 9.66-9.57=.09 the stock went up by .01%

Which is the same as 10/3?

Answers

Answer:

3.33 repeating or 3 and 1/3

Step-by-step explanation:

If you divide 10 by 3 you get a repeating decimal of 3.3333...

or if you make the fraction into a mixed number, it would be 3 and 1/3

Does any one know how to do 2r+4<8 it’s aggravating me

Answers

Answer:

Step-by-step explanation:

2r+4<8

subtract 4 from both sides

2r<4

divide by two

no need to reverse the sign since you are not dividing by a negative number

r<2

What is the approximate volume of the cylinder?

Answers

Answer:

V ≈ 509 m3 ← This is an approximate answer, rounded to the nearest whole. To calculate the volume of a cylinder, multiply the area of the base (Πr2) times the height (h). This gives the formula V = Πr2h.

Equation
Number of Solutions
6(2.1 + 1) - 2 = 12.1 + 4
How many solutions does it have?

Answers

Infinite solutions!!!!

Kyle found that
31/97 = 0.3196. Without doing any computation, explain how we know

that Kyle is wrong.

I need the answer really quickly!!!

Answers

Answer:

The answer actually rounds to 0.3196, but the computation is so long, we just count it as 0.3196. The real answer would be 0.31958762886.

Step-by-step explanation:

The Game Stop is having a sale on an originally $66.64 game. It is on sale for $29.99.
What is the percent change?

Answers

Answer:

54.997 decrease

Step-by-step explanation:

None  

If only GameStop wasn't that money hungry

29.99/66.64=.45
45% change

Ax + By > C
In Which Form is this linear inequality?

Answers

Answer: A

Step-by-step explanation:

I need help:(
Find x and y

Answers

Sin 45= x/8
X=5.6568 =5.66

You can either do cos 45= y/8 or just use the same value as x because it is an isosceles triangle so x and y are the same length

Please let me know if my answer is right! Thanks!

Keon biked 78 kilometers in 3 hours. How many kilometers did he bike per hour

Answers

Answer:

26km/hr

Step-by-step explanation:

78 divided by 3 hours is equal to 26km/hr

Find the perimeter of this parallelogram:
8.2 cm
6.5 cm
Find the perimeter of this triangle:
7.3cm
6.1cm
9.6cm

Answers

Answer:

parallelogram 's perimeter =2(8.2+6.5)

""" =2×14.7

... = 29.4

perimeter of triangle=7.2+6.1+9.6

""""" =22.9

Please help will give Brain!

Answers

Answer:

its 4 :)

Step-by-step explanation:

heyyy please give me brain i really am thankfull if you do and

also have a nice day hope this help and thank you very much.

525 metres in 30 minutes

Answers

Answer:

what you want to know...

Step-by-step explanation:

please write complete question.....

So,I can understand it

1/3 x 2/3, Please help me with this, I am struggling.

Answers

Answer:

2/9

Step-by-step explanation:

i search it up

On the first day of ticket sales the school sold 8 senior citizen tickets and 1 child ticket for a total of $97. The school took in $102 on the second day by selling 6 senior citizen tickets and 4 child tickets. Find the price of a senior citizen ticket and the price of a child ticket.

Answers

Answer:

A senior citizen ticket costs $11, and a child ticket costs $9.

Step-by-step explanation:

Let s = price of 1 senior citizen ticket, and let c = price of 1 child ticket.

First day:

8s + c = 97

Second day:

6s + 4c = 102

We have a system of 2 equations in 2 unknowns.

8s + c = 97

6s + 4c = 102

We will use the addition method to solve the system.

Multiply both sides of the first equation by -4. Write the second equation below it and add the equations.

     -32s - 4c = -388

(+)     6s + 4c = 102

----------------------------

      -26s       = -286

Divide both sides by -26.

s = 11

Now substitute s with 11 in the first original equation and solve for c.

8s + c = 97

8(11) + c = 97

88 + c = 97

Subtract 88 from both sides.

c = 9

Answer: A senior citizen ticket costs $11, and a child ticket costs $9.

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