1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ymorist [56]
2 years ago
14

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

Mathematics
1 answer:
koban [17]2 years ago
6 0

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:

You might be interested in
Lynda cuts a piece of wood for a project. The first cut is shown and can be represented by the equation y=1/4x-5.The secend cut
Svetradugi [14.3K]

Since the second line is parallel to the first, it will have the same slope. The y-intercept of the new line is 4 (because of the coordinates given) so the equation of Lynda's second cut is y = 1/4x + 4 which is choice C

4 0
3 years ago
Read 2 more answers
Solve and type in a different form by using the given theorems of logarithms
scoray [572]

\log\left(\frac{10}{y}\right) = \log(10) - \log(y)

The general rule is

\log\left(\frac{A}{B}\right) = \log(A) - \log(B)

Other log rules are

\log(AB) = \log(A) + \log(B)

B\log(A) = \log(A^B)

4 0
3 years ago
ASAP PLEASE HELP!!!
Mariulka [41]

Z score = (x -mean) /  standard deviation.

For this problem X = 50 cm.

Z-score = (50 - 49.2) / 1.8

Z score = 0.8 / 1.8

Z score = 0.44

Look up 0.44 on a z-score table.

0.44 = 0.6700

0.67 x 100 = 67% will be 50 cm or longer.

8 0
3 years ago
What is the value of 3 in number 234
Nonamiya [84]
30 because it is in the tenths place
7 0
2 years ago
Read 2 more answers
D=rt What does T equal? Lol how is this possible
vampirchik [111]

Answer:

t = D/r

Step-by-step explanation:

you rearrange the equation so that is the subject. when you bring something over the equal sign, it reverses the function so D = r×t becomes t = D/r

4 0
3 years ago
Other questions:
  • What is the sum of all positive 1 digit integers that 4221462 is divisible by?
    14·2 answers
  • A circular hedge surrounds a sculpture on a square base. The radius of the hedge is 6x. The side length of the square sculpture
    7·1 answer
  • How can you use a pattern to add 20+30+40+50+60+70+80​
    6·1 answer
  • Pamela buys a shirt for $36. If tax is 8%, what is the total cost of the shirt?
    8·2 answers
  • Sinead bought 2 shirts for $15.95 each and a pair of shoes for $42.14. If she paid for the items with a $100 bill, how much chan
    10·1 answer
  • Johan always wears a shirt, pants, socks, and shoes. He owns 20 pairs of socks, 5 pairs of shoes, 10 pairs of pants, and 8 shirt
    12·2 answers
  • (3^5)^2/3^-2<br><br> Simplify please
    7·2 answers
  • X^2 = -8x - 7 Rewrite the equation by completing the square. What are the solutions?
    11·1 answer
  • Evaluate the expression if y=4.4 and z= 12<br> z2+ 8y
    9·1 answer
  • Need Help With this plz answer fast
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!