We want to use a matrix to solve
-8x - 8y = -16
6x - 9y = -108
Before solving, simplify the equations as follows:
Divide the first equation by -8 to obtain
x + y = 2 (1)
Divide the second equation by 3 to obtain
2x - 3y = -36 (2)
In matrix form, the equations are

The determinant of the matrix is
D = (1)(-3) - (1)(2) = -5
Use Cramer's Rule.

Similalrly,

Answer: (-6, 8) or x = -6, y = 8
Answer:
3X+24=7X-4
3X-7X=-4-24
-4X=-28
X=-28/-4
X=7 ANS.
PROOF:
3*7+24=7*7-4
21+24=49-4
45=45
Step-by-step explanation:
Answer:
If the area of a square is given by the polynomial 4x2 – 36x + 81, then which of the
following expressions represents the length of one side of the square?
A 2x -9
B
2x + 9
C 4x - 18
D 4x + 18
Step-by-step explanation:
answer 4x+18
Answer:
The only positive integers would be anything less than 3. So 1 or 2 would work
Step-by-step explanation:
If something that is already being raised to a power, gets raised to another power, those powers add up. So if it were
, the exponents would add which would make it
.
In the case of your question, if 'n' was 2 it would be to the power of 6 making it less than to the power of. 1 could also work