Mrs. brown gives two tests to her class. 30% of the class passed both tests and 45% of the class passed the first test. what
percent passed the second test given that they passed the first test?
a)
15%
b)
33%
67%
d)
75%

C) 67%

Step-by-step explanation:

Conditional probability:

P(A given B) = P(A and B) / P(B)

P(passed 2nd given passed 1st) = P(passed 2nd and 1st) / P(passed 1st)

P(passed 2nd given passed 1st) = 0.30 / 0.45

P(passed 2nd given passed 1st) = 0.67

because linear equations are a lot simpler than quadratics equations, and linear equations formula is a lot easier to memorize. that's why i think they're harder.

part a

in a city ice cream is mostly only bought when the temperature is very high as ice cream cools down our

so we can derive the conclusion that as the temperature increases the number of ice creams sold also increases

part b

y intercept is 5

slope is 2

happy to

pls mark as brainliest