Answer:
Step-by-step explanation:
We are given;
- A point (6, -4)
- An equation of a line, 9x - 3y = 9
We are required to determine the equation a line passing through a point (6, -4) and perpendicular to the given line;
- To answer the question we need to get the gradient of the given line first.
- We write the equation 9x - 3y = 9 in the form of y = mx + c, where m is the slope;
y = 3x -3
- Thus, the slope of the line is 3
But; m₁ × m₂ = -1 (For perpendicular lines)
Therefore;
m₂ = -1 ÷ 3
= -1/3
Therefore, the slope of the line in question is -1/3 and the line passes through (6, -4).
To get its equation, we get another point (x, y)
Then;
Thus;
In the form of slope-intercept, the equation will be;
Thus, the equation of the line is;
Answer:
That is literally ONE OF THE WORST LESSONS EVER......have fun boo :)
Step-by-step explanation:
P(B|A) means "the probability of B given A", which in turn means: how likely is B, if we are guaranteed that A is true?
In your case, this means: if you already know that the person has a sister, how likely it is that the same person also has a brother?
if you look the diagram, you see that 4 people has a sister: Davis, Kari, Chu, Evan. Out of these 4 people, 2 of them also have a brother.
This explains P(B|A)=0.5: half of the people with a sister also have a brother.