Consider the estimated relationship: Y = 50 + 50X + 21Z Based on this regression equation, select all the statements which are True:
A.) Controlling for X, the value of Y decreases by 21 units for unit increase in Z
B.) The average value of Y when X=0 and Z=0 is 50.
C.) Controlling for Z, the value of Y increases by 50 units for 1 unit in X
D.) Controlling for X, the value of Y increases by 100 units for 1 unit increase in Z

Ms. green tells you that a right triangle has a hypotenuse if 13 and a leg of 5. she ask you to find the other leg of the triangle. what is you're answer?

Need to finish my juan wants to build a greenhouse in his back yard. he needs to maximize the ratio of floor area to structure volume in order to provide the most room for plants while minimizing the area to be heated. find the description of the structure that best meets juan’s criteria. a.) a hemisphere with a diameter of 12 feet b.) a cube with a side length of 12 feet c.) a cone with a diameter of 12 feet and a height of 10 feet d.) a square pyramid with a base side length of 12 feet and a height of 9 feet

Aski resort is charging $37.50 to rent a snowmobile for 5 hours. at this rate what will be the cost for a family of 5 to rent snowmobiles for 3 hours on the first day of their vacation and 4 hours for on the last day of their vacation