Jleaned a 12ft ladder against his house if the angle formed by the ladder and the ground is 68° how far from the base of the house the key place the ladder

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?

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2

What is the value of x? assume that the line is tangent to the circle.