dropnsocks8315
12.07.2019 •
Mathematics
Solve each system of equations
12) -2x + 6y = 30
5x + 2y = 10
i really need .
Solved
Show answers
More tips
- S Style and Beauty How to Apply Foundation Correctly?...
- A Animals and plants How to Store Carrots: Tips for Homeowners...
- L Legal consultation Juvenile Justice: Who Needs It?...
- F Family and Home How to Choose the Best Diapers for Your Baby?...
- F Family and Home Parquet or laminate, which is better?...
- L Leisure and Entertainment How to Properly Wind Fishing Line onto a Reel?...
- L Leisure and Entertainment How to Make a Paper Boat in Simple Steps...
- T Travel and tourism Maldives Adventures: What is the Best Season to Visit the Luxurious Beaches?...
- H Health and Medicine Kinesiology: What is it and How Does it Work?...
- O Other How to Choose the Best Answer to Your Question on The Grand Question ?...
Answers on questions: Mathematics
- M Mathematics How many 3-digit whole numbers, whose digit sum is 24, are even?...
- M Mathematics Will give brainliest, 2x normal points, rating and !...
- M Mathematics What’s the abbreviation of 78 degrees below celsius...
- M Mathematics If you place a 80-foot ladder against the top of a 64-foot building, how many feet will the bottom of the ladder be from the bottom of the building?...
- M Mathematics Solve for x 11x+4 15 or 12x−7 −25...
- M Mathematics Suppose that a restaurant chain claims that its bottles of ketchup contain 24 ounces of ketchup on average, with a standard deviation of 0.8 ounces. if you took a sample...
- M Mathematics Acertain television is advertised as a 73-inch tv (the diagonal length). if the width of the tv is 48 inches, how many inches tall is the tv?...
- M Mathematics The supply function for manufacturing a certain item is p (x)=x^2+46x-66. the demand is p (x)=56x+30. if x represents he number of items (in hundreds) what is the optimum...
- M Mathematics Triangle xyz has vertices x(1,-1), y(3,4), and z(5,-1). nikki rotated the triangle 90 degrees counterclockwise about the origin. what is the correct set of image points for...
- M Mathematics Algebra plz will give ! find the product of (x^2 + 4x − 3)(2x^2 + x + 6). 2x^4 + 9x^3 + 4x^2 + 21x − 18 2x^4 + 9x^3 + 10x^2 + 21x − 18 2x^4 + 7x^3 + 4x^2 + 21x − 18 2x^4...
Ответ:
(0,5)
Step-by-step explanation:
-2x+6y=30
5x+2y=10
I'm going to use elimination.
I'm choosing this method because both equations are in the same form.
They are in the form ax+by=c.
So in order to use elimination, I need one of my columns that contain the variables to contain opposites. Neither one of my columns with the variables have that. Example -2x and 5x are not opposites and 6y and 2y are not opposite.
I'm going to multiply both sides of equation 2 by -3. This will help me to achieve the opposites in a column.
So the system becomes:
-2x+6y=30
-15x-6y=-30
If we add the columns you will see that the variable y get's eliminated. Let's do that.
-2x+6y=30
-15x-6y=-30
Adding!
-17x+0y=0
-17x =0
x =0
So using one of the equations (you choose; doesn't matter which one you pick) along with x=0, I'm going to find y.
I choose equation 2.
That is I choose 5x+2y=10 along with x=0 to find y.
5x +2y=10 with x=0
5(0)+2y=10
0 +2y =10
2y=10
y=10/2
y=5
The solution is (x,y)=(0,5).
Ответ:
Its B
Step-by-step explanation: