The measure of angle QPR is 30 degrees
The <u>probability</u> that a point <u>chosen at random</u> in the triangle is also in the blue square can be calculated using <u>geometrical definition of the probability</u>:

1. Find the total area of the triangle:

2. Find the desired area of the square:

Then the probability is

Answer: correct choice is B
ANSWER
{
}
EXPLANATION
From the graph, the given quadratic inequality is

We can see that the corresponding quadratic function is a perfect square.
Since the graph opens upwards and it is always above the x-axis, any real number you plug into the inequality, the result is greater than or equal to zero.
Hence the solution set is
{
}
The correct answer is A
I believe that choice A is the best answer out of those given above.
Hope this helps and please enjoy Brainly! -ZeusROX