Answer:
-270-180w
Step-by-step explanation:
For this case suppose that we have a quadratic equation of the form:

The solution to the quadratic recuacion is given by:

Where,
The discriminant is:

When the discriminant is greater than zero, then the root is positive, and therefore, we have two positive real solutions.
Answer:
B. it has two real solutions
Dang so he fat step by step
Answer:
a) 15 000 litres
b) 1/3
Step-by-step explanation:
a) Since the pool has 7500 litres when half full, it must have double that when full.
7500 * 2 = 15 000
b) Since the full pool is 15000, when the pool has 5000 litres it has 5000 out of 15000, hence the fraction 5000/15000 which simplifies to 1/3.
Simplification: divide the numerator and denominator by 5000.
Answer:
-3>y
Step-by-step explanation: