Si En el sistema de referencia XOY (1 u = 1km) la trayectoria de una avioneta es rectilínea y pasa por
(3;−1)
B
(
3
;
−
1
)
. Halla la ecuación general de la trayectoria sabiendo que ésta hace un ángulo de inclinación de
37°
37
°
This is an example of conditional probability because we are trying to find the probability of an event occurring GIVEN the occurrence of some other event. There is a formula for this (see image attached).
If we follow this formula, the numerator would be the probability of (A AND B) which in this case is "48% of the class passed BOTH exams." The denominator in the formula would be that "60% of the class passed ONLY THE SECOND exam."
Therefore, P(A and B) = 0.48, which is 48% expressed as a decimal and P(B)= 0.60, which is 60% expressed as a decimal. Then, you can figure out the answer by dividing.