Answer:
x = (5,3)
Step-by-step explanation:
the quadratic formula is x =( -b±√(b^2-4ac))/2a
to solve for x, a=1, b=-8,c=15
x =( -(-8)±√((-8)^2-4*1*15))/2(1)
x=8 ± √(64-60))/2(1)
x=(8 ± √(4)) / 2
x=(8 ± 2) / 2
solve with '+'
x=(8 + 2) / 2 = 10/5 = 5
solve with '-'
x=(8 - 2) / 2 = 6/2 = 3
x = (5,3)
Answer:
He sold 960 kg
Step-by-step explanation:
Let the initial stock measure be x kg
So if he sold 45% ; what he sold was;
45/100 * x = 0.45x
So the quantity left would be;
x - 0.45x = 0.55x
So what was left is 96kg more than what was sold
Mathematically, we have this as;
0.55x - 0.45 x = 96
0.1x = 96
x = 96/0.1
x = 960 kg
Find area of the semi circle.
The diameter is, half of that would be the radius, which is 3.
= 14.1
Find the area of the rectangle.
6 * 4 =24
Add the two areas together.
24 + 14.1 = 38.1
