Use elimination to solve each system of equations.please help me im dying
2x - y = -1
3x - 2y = 1
Answers
Answer:
x=-3
Y=-5
Step-by-step explanation:
2x-y=-1 ×2
3x-2y=1. ×1
4x-2y= -2
3x-2y=1
eliminate y by subtracting
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Add the following polynomials, then place the answer in the proper location on the grid. Write your answer in descending powers of x.x 4 -3x + 1, 4x 2 - 2x + 8, and x 3 - 9
What times what equals 120 and When you add the two numbers they equal 26?
Three lights go on together first changes every 5 sec second every 6sec third every 8 sec when is the next time they go on together
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Q-QP
Answers
w=(q+p)/(q-pq)
factor out the q in the bottom part
w=(q+p)/[(q)(1-p)]
multiply both sides by q
wq=(q+p)/(1-p)
add 1 to both sides, but add (1-p)/(1-p) to the right side since that equals 1
wq+1=(q+1+p-p)/(1-p)=(q+1)/(1-p)
multiply both sdies by (1-p)
(wq+1)(1-p)=q+1
divide both sdies by (wq+1)
1-p=(q+1)/(wq+1)
subtract 1 from both sdies
-p=[(q+1)/(wq+1)]-1
multiply by -1
p=-[(q+1)/(wq+1)]+1 or
w=q+p/q−qp
Since p is on the right-hand side of the equation switch the sides so it is on the left-hand side of the equation.
q+p/q−qp=w
Factor q out of q−qp.
q+p/q⋅(1−1p)=w
Rewrite −1p as −p.
q+p/q⋅(1−p)=w
Multiply q by 1−p to get q(1−p).
q+p/q(1−p)=w
Multiply each term in the equation by (1−p).
q+p/q(1−p)⋅(1−p)=w⋅(1−p)
1+p/q=w−wp
Since −wp contains the variable to solve for, move it to the left-hand side of the equation by adding wp to both sides.
1+p/q+wp=w
Find the LCD of the terms in the equation.
It is q
Multiply each term in the equation by q in order to remove all the denominators from the equation.
p+wpq=−q+wq
Solve the equation.
p=q(w−1)/qw+1
Answer:
p=q(w−1)/qw+1
Answers
Answer:
Step-by-step explanation
1+1 = 11
Answers
Answer:
y=13/4 x -21
or in khan 13/4x - 21
GIMMIE BRAINLIEST OR SOMETHING
Work:
Slope = 5-(-8)/(8-4)
=13/4
So the equation is y=13/4x + b
plug it in and the equation is
y=13/4 x -21
Answer:
13/4 x-21
Step-by-step explanation:
:D
, 0.75, 1, 1.25, 1.5, …
Answers
Answer:
(6,1)
Step-by-step explanation:
your welcome :))
b) 13.75
c) -0.6
d) -3.75
Answers
2(-3.5) - 5y = 10
-7 - 5y = 10
+7 +7
-5y = 17
-5 -5
y = -3.4
The value of y is equal to A. -3.4.
Answers
Answer: 3
Explanation:
Since we want the least number of integers, divide by the largest integer (9).
2018 ÷ 9 = 224 remainder 2
So, N = 2999...999 (there are 224 of the 9's)
Thus, N + 1 = 2999...999 + 1 (there are 224 of the 9's)
= 3000...000 (there are 224 of the 0's)
The sum of the digits is: 3 + 0 + ... + 0 (there are 224 of the 0's)
= 3