x -3y = 4 multiplie both sides by -2 => -2x +6y = -8
2x +Qy = 8
-2x +6y = -8
2x +Qy = 8
------------------ assume the same terms
0 6y +Qy = 0
6y +Qy = 0
Qy = -6y divide both sides by y and will get
Q = -6
1. 10x
2. 18g
3. 6m
4. 4p
5. -5y
6. 9w
7. c^2+3d
8. 3a^2+2b^2+6a
9. 3x^2+x
10. 16x-y+3
11. 68x^2-34x-1
12. 32
13. 32
14. -9
15. 3m+3n
16. 6x-6y
17. 15f+5
Answer:
MISSING LENGTH IS 12 M
Step-by-step explanation:
9+9+ ? + ? = 42m
18+ X + X = 42m
2X=42-18
2X=24
X=12
Answer:
The answer would be -7/20
Step-by-step explanation:
You have (7/15) * (-3/4)
What you have to do is multiply the numerators, 7 and -3, which is -21.
Then you multiply the denominators, 15 and 4, which is 60.
Your fraction should then look like this (-21/60). *numerator/denominator
Then you simplify them by divided both numbers by 3, which gives your answer, (-7/20).
Since 7 is prime, the fraction can no longer be simplified any more.
Answer:
Discriminant = 140
Step-by-step explanation:
a = -2, b = 6, c = 13
6² - 4(-2)(13)
36 + 8(13)
36 + 104
140
