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
bija089 [108]
3 years ago
7

7x-y=19 2x-3y=19 solve by elimination​

Mathematics
1 answer:
avanturin [10]3 years ago
8 0

Answer:

x=2 y=-5

Step-by-step explanation:

7x-y=19

2x-3y=19

Multiply the first equation by -3

-3(7x-y)=19*-3

-21x +3y =-57

Add this to the second equation to eliminate y

-21x +3y =-57

2x-3y=19

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

-19x = -38

Divide by -19

-19x/-19 = -38/-19

x = 2

Now we need to find y

7x-y = 19

7(2) -y =19

14 -y =19

Subtract 14 from each side

14-14 -y=19-14

-y=5

Multiply by -1

y = -5

You might be interested in
Can someone please give this answer and plz give me the right answers
Alenkinab [10]

girl come.................

8 0
3 years ago
What is the answer and how to get the answer
sukhopar [10]

Answer:at right angles to the vertical; parallel to level ground.

Step-by-step explanation:

4 0
3 years ago
Simplify Expression-
kumpel [21]
In all these expressions you have a power of a power. 
You can solve them simply multiplying the exponents.
Remember that any quantity raised to the zero is equal to 1.
.
11) (n^4)^8 = n^(4×8) = n^32

13) (q^10)^10 = q^(10×10) = q^100

15) (x^3)^-5 = x^[3×(-5)] = x^(-15)

17) (z^8)^0z^5 = z^(8×0) z^5 = z^0 z^5 = 1×z^5 = z^5

<span> 19) (c^3)^5(d^3)^0 = c^(3</span>×5) d^(3×0) = c^15 d^0 = c^15×1 = c^15
5 0
3 years ago
X-31=46 explain how u got it plz i need help
mrs_skeptik [129]

Answer:

x=77

Step-by-step explanation:

77-31=46

8 0
3 years ago
Read 2 more answers
Trinomial in factored form 5y^2-y-18
Inessa05 [86]

Answer:

Step-by-step explanation:

(5y + 9)(y - 2) is the solution

5y^2 - 10y + 9y - 18

8 0
3 years ago
Read 2 more answers
Other questions:
  • WILL GIVE BRAINLIEST
    11·2 answers
  • Solve the following equations for x. Show the step by step process.
    9·1 answer
  • Using the graph as an aid, which statement describes a true relationship between the x-intercepts and the zeros? A) The x-interc
    9·1 answer
  • If the instructions for a problem ask you to use the smallest possible domain to completely graph two periods of y = 5 + 3 cos 2
    7·2 answers
  • . The length of a rectangle is 32 inches. The width of the rectangle is 17 inches. Which is the perimeter of the rectangle? *
    15·2 answers
  • Sara ran a race at a constant speed of 10 minutes per mile. The entire race was 10 miles long. How many minutes did it take her
    8·2 answers
  • PLS HELP ME PLS PLS PLS I NEED HELP ILL MARK BRAINLIEST
    12·1 answer
  • If a original image is 2 inches and a scale drawing is 3.5 inches what is the scale factor?
    15·1 answer
  • Two cars start at the same time, but travel in opposite directions. One car's average speed is 20 miles per hour (mph). At the e
    9·1 answer
  • What is the domain of the relation?<br><br> Express your answer using inequalities.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!