Two race cars are traveling at different speeds. The blue car travels 8 laps in 320 seconds. The red car travels 12 laps in 456 seconds. At its current rate of speed, how many seconds did it take for the blue car to complete its first 2 laps?

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me

What is the slope-intercept form for each equation in this system? compare the slopes and y-intercepts to describe the graph of the system. 3x - 4y = 28 4x + 10y = 20