Answer:
Step-by-step explanation:
Side PQ is a chord through the center and angle R is a right angle. This means that side PQ is the diameter of the circle.
Let O represent the center of the circle.
If the measure of arc QR is 40°, it means that the central angle formed by arc QR is 40°. Side OR and side OQ are equal because they are both radius of the circle. Therefore, ∆QOR is an isosceles triangle and the base angles are equal.
Therefore, ∠PQR = ∠ORQ
Since the sum of the angles in a triangle is 180°, then
∠PQR = (180 - 40)/2 = 140/2
∠PQR = 70°
I believe in would be 15$ off
Answer:
y=x-7
Step-by-step explanation:
Slope of the line is (-5+6)/(2-1)=1. Equation of the line is y=x-7
Answer:
No, the sum of all the probabilities is not equal to 1.
Step-by-step explanation:
Given

Required
Determine if the given parameter is a probability distribution
For a probability distribution to exist, the following must be true;

So, we have:


<em>Hence, it is not a probability distribution because the sum of all probabilities is not 1</em>
Answer:
2
Step-by-step explanation:
Write the proportion. You do 40x5=200. 200/100=2.