Answer:
use Pythagoras theorem
✓12x12+16x16
✓400
20
D) 5
Step-by-step explanation:
Using cosine law
b² = 10² + 12² - 2(10)(12)cos(24)
b² = 24.74909017
b = 4.974845743
20% more than 80:
80 + 20% of 80
80 + 20/100 × 80
80 + 16
= 96
By observing the table it can be concluded that the value of A must be equal to 3x × (-x)
So, the value will be -3x^2
