Answer: The correct option is second. The length of line segment PQ is 5 units.
Explanation:
From the given figure it is noticed that the MN is the tangent to the circle at point M and its length is 6.
The line PQ is the secant line with length x and QN is external secant segment with length 4 .
According to the tangent secant theorem the square of tangent is equal to the product of external secant with the sum of the of secant and external secant.
Therefore, the length of line segment PQ is 5 units.
Answer:
1
Step-by-step explanation:
To find the solutions (or, in other words, zeroes) of a quadratic function/equation we use the discriminant (the part that's inside the square root of the quadratic formula, .)
If the discriminant is smaller than 0, there are no zeroes
If the discriminant is equal to 0, there is one zero
If the discriminant is larger than 0, it has two zeroes
The discriminant is commonly denoted as .
