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
storchak [24]
3 years ago
14

Determine the best method to solve the system of equations. Then solve the system.

Mathematics
2 answers:
maxonik [38]3 years ago
8 0

Answer:

x=1  y = -1/2

(1,-1/2)

Step-by-step explanation:

7x-2y=8  

5x+2y=4

I would use elimination since we have 2y in one equation and -2y in the other

7x-2y=8  

5x+2y=4

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

12x = 12

Divide each side by 12

12x/12 = 12/12

x =1

The substitute back into equation 2

5(1) +2y = 4

5 +2y = 4

Subtract 5

5-5+2y = 4-5

2y = -1

Divide by 2

2y/2 = -1/2

y = -1/2

Artist 52 [7]3 years ago
5 0

Answer:

The best method is the elimination method. The solution is (1, -1/2).

Step-by-step explanation:

7x - 2y = 8

5x + 2y = 4

12x = 12

x = 1

7(1) - 2y = 8

7 - 2y = 8

-2y = 1

y = -1/2

Make sure to write the answer in the form of an ordered pair.

Note: Alternative methods are graphing and the substitution method.

You might be interested in
In AJKL, the measure of ZL=90°, JL = 55, LK = 48, and KJ = 73. What
Juli2301 [7.4K]
Together I think it’s the same way that you can get the one to the one you have on your computer problems you have no proof that I have it on my computer problems I have lost all the same information I I don’t have any proof that you are in my account so so much you have to pay for it and I’m sorry you don’t know where I can get you I know I
3 0
3 years ago
4x - 5y + 2xy = 0<br> Can Someone do this for me? I need help.
Nady [450]

Answer: x = 5y/ 2y + 4

Step-by-step explanation: coz I juss know

4 0
3 years ago
Will 1/4 x 7/8 be larger or smaller than 1/4? Explain your answer.
sweet-ann [11.9K]
It will be smaller than 1/4.

The reason being that 7/8 is a fraction which is less than 1, and that it can only be greater than 1/4 when the multiplying number, is a number which is greater than 1.

Note: When  a positive number is multiplied by a number which is less than 1, it makes the positive number to be smaller and

When a positive number is multiplied by a number which is greater than 1, it makes the positive number to be bigger.

5 0
3 years ago
Read 2 more answers
A worker at a snack stand opened a new box of cups. On the first day, the worker used 30 cups from the box. On the second day, t
Solnce55 [7]

Answer:

<em>630 cups</em>

Step-by-step explanation:

<u>Percentages</u>

This problem is most easily solved backward, i.e., from the final data up to the beginning.

There was a new box of cups and the worker at a snack stand opened it. He first used 30 cups from the box and the second day he uses 15% of the remaining cups in the box, and we are told that represents 90 cups.

If 15% (0.15) equals 90 cups, then the number of cups before the second day was 90/0.15 = 600 cups.

On the first day, we used 30 cups, thus the original number of cups in the box was 600+30=630 cups

7 0
3 years ago
I need help with this math problem
Alex17521 [72]

your answer is (1,3) but positive

6 0
3 years ago
Other questions:
  • If the unit selling price 2.50 and the unit cost 1.00 what action is needed to maintain Thr gross margin percentage when unit co
    6·1 answer
  • What number are 1.3 units from 0.4 on a number line
    13·2 answers
  • Find the volume <br> 12points
    8·1 answer
  • Simplify 4sqrt(6) / sqrt(30) by rationalizing the denominator.
    14·2 answers
  • Please help asap! i just need the answers. brainliest to first CORRECT answer!! thanks!
    6·2 answers
  • Which graph represents the equation y−3.6=1.6(x−1)?<br> show work, please!
    13·2 answers
  • A middle school has 89 sixth graders, 107 seventh graders, and 104 eighth graders. The grid represents the 31% of students at th
    7·1 answer
  • 7+3√8<br> please help me
    5·2 answers
  • Represent 42 divided by 6 = 7 using subtraction
    14·1 answer
  • HELP ME!!!! MY HOMEWORK IS SOOO CONFUSING
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!