Louis spent 12 hours practicing guitar if 1/4 of the time was spent practicing chords, how much time did louis spend practicing chords?

Two lines parallel to the same plane are parallel to eachother

Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36

About 9% of th population is hopelessly romantic. if 2 people are randomly selected from the population, what is the probability that at least 1 person is hopelessly romantic?