Substitution:
2x + (6(1/2x - 6)) = 19
2x + 3x - 36 = 19
5x - 36 = 19
+ 36
5x = 55
÷ 5
x = 11
y = (1/2 × 11) - 6
y = 5.5 - 6
y = -0.5
Elimination:
y = 1/2x - 6
- y
0 = 1/2x - 6 - y
+ 6
1/2x - y = 6
3x - 6y = 36
2x + 6y = 19
(add)
5x = 55
÷ 5
x = 11
y = (1/2 × 11) - 6
y = 5.5 - 6
y = -0.5
I hope this helps! Let me know if you need me to explain why I did some things :)
Answer:
8.49%
Step-by-step explanation:
x months
1 ≤ x ≤ 12
minimum:


≅8.49%
Answer:
Then the area of the triangle is 240 m²
Step-by-step explanation:
Area of a triangle:
The area of a triangle is given by the multiplication of its height and altitude, divided by 2.
In this question:
Base = 24m, altitude = 20m. So

Then the area of the triangle is 240 m²