MATHEMATICS HIGH SCHOOL

-9x+y=16
x-y=0

I have to solve by elimination.
Will someone help me please?

Answers

Answer 1
Answer: To do elimination, you combine the two equations by adding
  -9x + y = 16
+  x  -  y  = 0
  -8x  + 0y = 16

Now that there are 0y, we can solve for x:
-8x = 16
divide both sides by -8 
x = -2

To solve for y, plug the answer you got for x in to the original equations.

-9x + y = 16
-9(-2) + y = 16
18 + y = 16
y = -2 

x - y = 0
-2 - y = 0
y = -2

x = -2 and y = -2
Answer 2
Answer: -9x+y=16
x-y=0
add the two equations, the y's cancel each other out 
-8x=16
divide by -8 
x=-2

Related Questions

Identify the value of p.p = 11p = 10p = 12p = 13
PLSSSS HELP IF YOU TRULY KNOW THISSSS
Explain why the initial value of any function of the form f(x) = a(bx) is equal to a.
Solve the rational equation1/x+3/8=1/4
PLEASE HELP MEEEEEEE

What does 2 times √49 equal to?

Answers

Hi


2*√49

= 2√49

= 14


I hope that's help !
The square root of 49 is 7 so we can simplify that. 2 times 7 equals 14 :)

A rectangle measure 11cm by 30cm.What is its area

Answers

well, 11*30 is equal to 330cm
330 cm. Area=11cm*30cm

Evaluate A2 for A = 2.3.

Answers

2(a)
if a = 2.3, then substitute in 2.3
2*2.3 = 4.6
well if A is 2.3 then u multiply 2.3 by 2 which is 4.6

7x-8x+4=5x-2 solve for x

Answers

7x - 8x + 4 = 5x - 2

7x - 8x - 5x = -2 - 4

-6x = -6

x = 1
7x-8x+4=5x-2 \n 4+2=5x-7x+8x \n 6=6x \n 6/6=x \n 1=x

A card is drawn from a standard 52-card deck. What is the probability that the card is a red jack, given that the card is a face card (a jack, queen, or king)?

Answers

Answer:

The answer is B

Step-by-step explanation:

only 20 chars.....

7. PQ contains points Rand S such that PR, RS and SQ are respectively three consecutive evenintegers. If PQ is 54, find the length of the middle segment, RS

Answers

The length of the middle segment RS is determined as 18.

How to calculate the middle segment?

Let's assume that the three consecutive even integers are x, x + 2, and x + 4

So, the length of PR (x) + the length of RS (x + 2) + the length of SQ (x + 4) equals the total length of PQ (54).

Mathematically, this can be represented as:

x + (x + 2) + (x + 4) = 54

Now, let's solve for x:

3x + 6 = 54

Subtract 6 from both sides:

73x = 48

Now, divide by 3:

x = 16

So, the first even integer (PR) is 16, the second even integer (RS) is 16 + 2 = 18, and the third even integer (SQ) is 16 + 4 = 20.

Thus, the length of the middle segment RS is 18.

Learn more about middle segment here: brainly.com/question/26166058

#SPJ3

Answer:

RS = 18

Step-by-step

PR = x

RS = x+2

SQ = x+4

x+(x+2)+(x+4)=54

3x+6=54

3x=48

x=16

PR = 16

RS = 18

SQ = 20
Other Questions
PLEASE ANSWER THESE :Use a calculator to find the cube root of -250 correct to 2 decimal places.
Find the probability distribution for the following function:P(x) =for x = 4, 6, and 8 P(3) = 2, P(5) = 3, P(7) = 4 P(3) = 9, P(5) = 10, P(7) = 11 P(3) = 1, P(5) = 2, P(7) = 3 P(4) = 3, P(6) = 4, P(8) = 5
The line that divides a parabola in half is..?
Write the point-slope form of the equation of the line through the given point with the given slope.Through (-2,0) slope=2