The probability of two events A and B happening simultaneously is 0.15. The probability of only event A happening is 0.30. Find the probability of event B happening, if event A had already happened.

Which statement is always true? a negative exponent cannot be part of an expression's numerator. a negative base raised to the power of 2 has a negative value. a negative base raised to the power of 2 has a positive value. any number to the first power is zero.

One month, a music site observed that 60% of the people who downloaded songs from its site downloaded q sam's latest single. the equation below represents this information, where x represents the total number of people who ddownloaded songs from the site that month: x = 0.6x + 384 how many people who downloaded songs from the site that month downloaded q sam's latest single?

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?