Cathy is moving into a tenth-floor apartment. she has a grand piano that weighs 570 pounds and is too big to fit in the elevator or in the stairwell.

which simple machines would make it easiest for cathy to get her grand piano up to her new apartment?
a.
wheels and axles
b.
inclined planes
c.
screws
d.
pulleys

Aparticle moves in a circle 1.50 m in radius . through what angle in radians does it rotate if it moves through an arc length of 2.50m? what is the angle in degrees?

7. see worksheet 1 for values of variables x1, x2 and x3 and answer the following questions: a. for each variable find the mean, median, coefficient of skewness, range and population standard deviation. b. compared to variable x1, how are the mean and median affected by extreme values (outliers) seen in x2 and x3. c. is the median or mean the better measure of location for x2 and x3? explain. d. explain the differences in the magnitudes of the skewness coefficients for the three variables. e. what is the relationship between the range and standard deviation looking across the three variables?

Which of the following is another term for a planned economy