Answer:
12. 268
13. 417
14. 83
Step-by-step explanation:
Step-by-step explanation:
given :
2x - 3y = 11
-6x + 8y = 34
find : the solutions of the system by using Cramers Rule.
solutions:
in the matrix 2x2 form =>
[ 2 -3] [x] [11]
=
[-6 8] [ y] [34]
D =
| 2 -3 |
|-6 8 |
= 8×2 - (-3) (-6)
= 16-18 = -2
Dx = | 11 -3 |
| 34 8 |
= 11×8 - (-3) (34)
= 88 + 102
= 190
Dy = | 2 11 |
|-6 34 |
= 2×34 - (-6) (11)
= 68 + 66
= 134
x = Dx/D = 190/-2 = -95
y = Dy/D = 134/-2 = -67
the solutions = {-95, -67}
Answer: 6x + 24
Explanation: In this problem, the 6 "distributes" through the parenthses, which means that it multiplies by each of the terms inside.
So we have 6(x) + 6(4) which simplifies to 6x + 24.
Answer:
true
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
1km=1000m
4500 divided by 1000 is 4.5
