First find how many students are sick the second year:
0.20 × 120 = 24
Then all you need to do is subtract:
120 - 24 = 96
So the number of students that got sick this year is:
96 students
How many marbles are there, and what colors are they?
Answer:
The quadratic equation 
has no real solution.
Step-by-step explanation:
Rewrite the quadratic equation in the standard form 
:
, for which:
The quadratic discriminant of is 
. The quadratic discriminant of would be:
.
Since the quadratic discriminant of this equation is negative, this quadratic equation has no real solution.
The area of the path is can be solved using the equation below:
Area path = wide²
First, let us convert 3 feet to inches such as shown below:
3 feet * (12 inches / 1 foot) = 36 inches
Area of the path = 36²
Area of the path = 1296 inches²
Solving for the area of the square bricks
Area of the bricks = (3 inches)²
Area of the brick = 9 inches²
Solving for the number of bricks, we have it:
Total number of bricks = Area of the path/area of the bricks
Total number of bricks = 1296 / 9
Total number of bricks = 144 pieces
The answer is 144 total number of bricks.
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