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
pav-90 [236]
3 years ago
12

Please help me I really need help

Mathematics
1 answer:
Oliga [24]3 years ago
5 0

Answer:

Step-by-step explanation:

(1) 2x - 6y = -12

(2) x + 2y = 14

There is a -6y and a +2y. Since they have opposite signs, I'll try to eliminate the y terms. (That's my choice. There is more than one way to solve these.)

Multiply eq. (2) by 3:

3x + 6y = 42

Then add the result to eq. (1) to eliminate the y terms:

2x - 6y = -12

3x + 6y = 42

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

5x   = 30,  so x = 6

Now plug the value of x into eq. (2) and solve for y:

6 + 2y = 14

2y = 8

y = 4

Why did I use eq. (2) to solve for y? Because it's less work. I could have used eq. (1) instead:

2(6) - 6y = -12

12 - 6y = -12

-6y = -24

y = 4

More than one way to solve.

You might be interested in
The mid-point or number which divides a series of values into two groups of equal numbers of values is referred to as the:
Over [174]
<span>The mid-point or the number that divides a series of values into two groups of equal numbers of values is referred to as the median. To get the median value, first sort the numbers from highest to lowest or lowest to highest and then pick the middle number. However, for even numbered sets of numbers, take the average of the two middle numbers and the resulting number is the median. </span>
3 0
3 years ago
In an equation, constant can change.
valina [46]
I think the answer is false
8 0
3 years ago
Pls helpppp meeeeee :(
Alja [10]

Answer:

Sam

30

Step-by-step explanation:

Sam made a mistake when he said 10^2 -20. The steps should have been:

2n^2-20=2(5)^2-20\\2(25)-20\\50-20=30

You are supposed to square 5 first before multiplying 2. Sam multiplied by 2 first. The correct answer is 30.

7 0
3 years ago
A little help??????????????
Paul [167]

Answer:

b for the first one and A for the second

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
How to solve this I don’t get this material
Nata [24]
6^2+(24/6+3^2)
First, solve the powers.
6^2=6*6=36
3^2=3*3=9
Now substitute.
36+(24/6+9)
Solve the parentheses.
36+(4+9)
Then, solve.
36+4+9=49


4 0
3 years ago
Other questions:
  • The regression calculator shows the relationship between the hours Devin spent playing a video game, x, and the levels he achiev
    11·1 answer
  • A python curls up to touch the tip of its own tail with its nose, forming the shape of a circle. The python is 2.6π meters long.
    5·1 answer
  • Jeremy used 5/6 of a loaf of bread throughout the week if there were 24 slices of bread how many slices did Jeremy use
    10·2 answers
  • Plot the coordinates
    13·2 answers
  • Simplify completely the quantity 4 times x to the third power plus 5 times x to the 2nd power plus 3 times x all over x. (2 poin
    10·1 answer
  • Which of the following is a polynomial function in factored form with zeros at 0, -3, and 4
    6·1 answer
  • Find (7.6×10^3) × (5.9× 10^12)​
    13·2 answers
  • In the given figure poq is a line. if x=30 then find qor and ros​
    9·1 answer
  • A roulette wheel has 383838 slots, of which 181818 are red, 181818 are black, and 222 are green. In each round of the game, a ba
    8·1 answer
  • Working together, two ants named Aran and Beatrice can build an ant hill in 10 hours. Aran and Charlie can build the ant hill in
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!