The plans for a Zipline are shown. Use two points to determine the slope of the zipline. Then verify that the slope is the same by choosing a different set of points. The slope of the the line is _ Answer as a fraction or decimal.

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

[15 points]find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible