Mathematics High School

I can't figure it out.
2x+2y=2
-4x+4y=12
​

I Can't Figure It Out. 2x+2y=2-4x+4y=12

Answers

Answer 1

Answer:

how to solve 2x+2y=2 , -4x+4y=12

this is  solving equations using substitution .... i have ALOT more but i juss dnt get this stuff

2x + 2y = 2      -4x + 4y = 12

x + y = 1

x = 1 - y

-4x + 4y = 12

-4(1 - y) + 4y = 12

(-4 + 4y) + 4y = 12

-4 + 8y = 12

8y = 16

y = 2

2x + 2y = 2

2x + 2(2) = 2

2x + 4 = 2

2x = -2

x = -1

Check.

-4x + 4y = 12

-4(-1) + 4(2) = 12

4 + 8 = 12

Answer: x = -1 and y = 2

Step-by-step explanation:

Related Questions

coat is 20% off. If the regular price of the coat is $225, what is the sale price of the coat?

Answers

Answer:

$180

Step-by-step explanation:

$225 times .20 = 45 .   225-45=180

Answer:

$180

Step-by-step explanation:

Find 1% of the price.

100% = 225

1% = 225 ÷ 100 = 2.25

100 - 20 = 80% (Percentage of sale price)

80% = 2.25 x 80 = 180

You get scores of 72 and 88 on 2 science tests. You have to have an average of at least 85 to not be grounded by your parents. What score do you need to make on your next test to not be grounded?

Answers

Answer:

95

Step-by-step explanation:

72+88+95=255:3= 85

Answer: 95
1. Add both test scores (72 & 88) together. You get 160
2. Then you divide 160 by 2. You get an average of 80.
3. When you add 72, 88, and 95 together you get 255.
4. You then divide 255 by 3
5. You get an average of 85

Find the volume of the cylinder.
Either enter an exact answer in terms of it or use 3.14 for

Answers

Ans: 1205.76 units^3

Explanation:

Volume of cylinder

= base area x height

= 3.14 x 8² x 6

= 3.14 x 64 x 6

= 1205.76 units^3


In this question, I used 3.14 instead of π.

Base area = πr²

Hope it helps :), mark me brainliest please!

A leisure aircraft is owned by the Broadland Flying Group which has 10 members. The costs of keeping the aircraft comprise maintenance costs (including insurance) and the running cost which is mainly fuel. Average fuel consumption is 9 miles per gallon. If the 10 members of the Group are to share costs equally, write down a formula to enable Gordon the treasurer to calculate the annual cost for each member if the aircraft travels n miles in a year, incurs maintenance costs of £M and fuel costs £3 a gallon.

Answers

Answer:

£(M + n/3) / 10

Step-by-step explanation:

Given that :

Number of members = 10

Fuel consumption = 9 miles per gallon

Consumption for n miles = n/9 GALLONS

Cost of fuel = n/ 9 * £3 = 3n / 9 = £n / 3

Maintainace cost = £M

Annual cost per member :

£(M + n/3) / 10

Select the corect answer which expression has a value closest to 1 (Use 3.14 as the value of π.)​

Answers

is this a muliple question? if so wheres the answers?

Answer:

dear the correct answers are not given so how can we choose ?

La energía que posee un cuerpo que se encuentra en movimiento se conoce como energía cinética. La Física es la ciencia encargada de estudiar este fenómeno natural y, para calcularla, utiliza la fórmula. La unidad de medida de la energía es el julio (J).

Answers

Answer:

Energía cinética = 0,5 x (masa x velocidad^2).

Step-by-step explanation:

"Cinética" significa "movimiento", y por lo tanto, la energía cinética es la energía que hay en algún objeto o cuerpo porque se está moviendo. Así, esta energía puede definirse como el trabajo mecánico necesario para acelerar un objeto de masa particular desde el carril hasta el terreno en movimiento. Al recibir esta energía rápidamente, el cuerpo retiene esta energía cinética dentro de él, a menos que cambie su velocidad.

.
Simplify the radical expression.



−4x2

2x2

−2x2

4x2

Answers

2x^2 ( the second one ) :-)

graph the linear equation y = -6x - 5

Answers

here’s my answer from desmos!

this was my answer from demos

how muck is in kilograms?

Answers

Answer:

1000grams= 1 kilogram

Step-by-step explanation:

Answer:

1000 grams = 1 Kilo

find the m and b of the table

Answers

9514 1404 393

Answer:

  m = 1/2

  b = -7

Step-by-step explanation:

The formulas for these can be used.

  m = (y2 -y1)/(x2 -x1) . . . . . . . . . formula for slope given 2 points

  m = (-9 -(-11))/(-4-(-8)) = 2/4

  m = 1/2

__

  b = y1 -m·x1 . . . . . . . . . . . . formula for y-intercept given slope and point

  b = -11 -(1/2)(-8) = -11 +4

  b = -7

First to answer all 3 correct gets brainliest !!!!!!!

Answers

Answer:

90

Step-by-step explanation:

1. 90 degrees
2. Yes
3. 2

Plz help me with 18 is not -0.95

Answers

Answer:

Please refer to the attachment.......

Mr. R had $120,000 in a retirement account. The account paid 4.25% interest rate. How much money was in the account at the end of 10 years?

Answers

Answer:

R.s 51000

Step-by-step explanation:

I= PTR/100

=120000×10×4.25/100

=51000

hence ,

interest rate is R.s 51000

PLEASE I NEED HELP ASAP
3. Triangle ABC has angle measures as shown.

(a) What is the value of x? Show your work.
(b) What is the measure of angle C? Show your work.
Answer:

Answers

Step-by-step explanation:

a. 180=3x+28+5x+52+2x-10

180=10x+70

110=10x

11=x

b. C= 2[11]-10

=22-10

=12

If I have $25.2, would it be $25.02 or $25.20?

Answers

Answer:

You would have $25.20

if it was 25.02 the 0 would be included, money can be rounded like this too

Answer:

Yeah he/she is correct because I did that too.

Step-by-step explanation:

the sum of two consecutive multiples of 4 is 36 . find the multiples ???
PLZZZZZZZZZ help me now ​

Answers

Answer:

The numbers are 16 and 20

Step-by-step explanation:

Let the multiples be: x+4 and x+8

Sum is 36, so we can make an equation:

x+4+x+8=36

2x=36-12

x=12

The numbers are 12+4=16, 12+8=20.

Hope this answer helped you! If so, please leave a rating and let me know if I was correct. (Hopefully Brainliest, but totally up to you.) Have a great day!

PLEASE HELP!!
The cost to rent a chain saw for two days and a brush chipper for two days is $272. The cost to rent a
chain saw for two days and a brush chipper for one day is $195. Write a system of equation to solve to
find the cost of renting a chain saw for one day.

Answers

$272-$195= $77
So that means $77 is the price of the renting chain saw for one day

Jack made 9 identical bags using 5 yards of fabric. How much fabric did Jack use for each bag? Solve on paper and check your work on Zearn.

Answers

Answer: 5/9 yards

Step-by-step explanation:

From the question, we are informed that Jack made 9 identical bags using 5 yards of fabric.

To calculate the amount of fabric that Jack use for each bag, we have to divide 5 by 9. Thus will be:

= 5 / 9

Therefore, it means that Jack used 5/9 yards for each bag

Pls help I really need it

Answers

T equal A5 beef plus Australia beef the answer is eat both

What type of answer would you expect from the problem below? Explain why you expect that type of answer.
5/6 + 9.25

A) Rational; Both numbers can be written as fractions, so the answer will be a fraction, which is a rational number.
B) Irrational; Both numbers can be written as fractions, so the answer will be a fraction, which is an irrational number.
C) Rational; One number is a fraction and the other is a decimal, so they are not like terms and cannot be combined.

Answers

I don’t really understand this question can you go more into detail

Answer:A

Step-by-step explanation:

Edge 2020

18,000 divided by 25%

Answers

Correct answer - 72000.

Answer:

4500

Step-by-step explanation:

18000 / 100 =180

180*25 = 4500

Find the measure......

Answers

Answer:

the answer would be S/ 2= 140/ 2 = 70°

Express the function F in the form f ∘ g. (Enter your answers as a comma-separated list. Use non-identity functions for f(x) and g(x).) F(x) = x + 2

Answers

Answer:

[tex]F(x) = f \circ g[/tex]

[tex]f(x) = x + 2[/tex] and [tex]g(x) = x[/tex]

Step-by-step explanation:

Given

[tex]F(x) = x + 2[/tex]

Required

Express as

[tex]F(x) = f \circ g(x)[/tex]

In functions:

[tex]f \circ\ g(x) = f(g(x))[/tex]

So, we have:

[tex]f(g(x)) = x + 2[/tex]

g(x) can be set to x and f(x) to x + 2

Hence:

[tex]F(x) = f \circ g[/tex]

When: [tex]f(x) = x + 2[/tex] and [tex]g(x) = x[/tex]

Find the area of the circle 18in

Answers

1017.88in^2

You need to use pi

Answer:

1017.88inches^2

Step-by-step explanation:

Area of a circle=pi * radius^2

324*pi=1017.88

CAN SOMEONE HELP LIKE RN I NEED IT QUICK

Answers

I’m pretty sure it’s 60

A 2-year loan of $500 is made with 4% simple interest.Find the interest earned​

Answers

Answer:

$40

Step-by-step explanation:

Interest = Principal x Rate x Time

I = 500(.04)(2)

Based on the information given the interest earned is $40.

Using this formula

Interest =Principal× Rate× Time

Where:

Time =2 year

Principal=$500

Rate=4% or 0.04

Let plug in the formula

Interest=500(0.04)(2)

Interest=$40

Inconclusion the interest earned is $40.

Learn more here:https://brainly.com/question/20981855

Find the values of A, B, and C in the table.

A=_____
B=_____
C=_____

Answers

Answer:

1, 2, below

Step-by-step explanation:

Took the assignment on EDGE

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

Answers

Answer: 8463160

Step-by-step explanation:

Answer:

8463160

Step-by-step explanation:

                https://byjus.com/rounding-to-the-nearest-tenth-calculator/

What is the solution to the equation 3^x = 10?

Answers

Answer:

log3 (10) = x

the 3 is a tiny 3

Step-by-step explanation:

remember the saying, left right left.

so, 3 goes to the left, x goes to the right, and 10 goes to the left side of the equal sign which in turn comes out to log3(10) =x

It’s says to find the volume...

Answers

Answer:

i think its 72 if i'm wrong sorry

Step-by-step explanation:

Answer:

17 cm

Step-by-step explanation:

add the length, width of triangle

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