Friday
December 6, 2013

# Posts by sammy

Total # Posts: 442

Physics
If it takes 2.37 seconds for a stone to hit the ground from a cliff. (a) From what height was the stone dropped from? (b) What is the stones final velocity when it hits the ground?

college stat
Use the graphic to show the sampling distributions of means for the sample from Prison A (n=82) and the sample from Prison B (n=37). Mark the expected value of the mean and the standard units. Shade in the critical zone for alpha = .05.Locate each sample mean after you have ma...

Calculus
Thank you so much!!!!!

Calculus
Sketch the region enclosed by the given curves. Decide whether to integrate with respect to x or y. Then find the area of the region. 2y=5x^(1/2) , y=4 and 2y+1x=6 I've been trying this problem for about 3 hours. Please help!!!!!

MATH
Solve the following system of equations for the unknown variables. a + b = 7 a + c = 12 b + c = 15

Precalculus
If Sin A=3/5 and cos B= -12/13, find the value of sin(A-B) if Angle A is in Quadrant I and angle B is in Quadrant III.

A cylindrical metal can with a radius of 4.25 cm is floating upright in water. A rock is placed in the can, causing it to sink 0.0230 m deeper into the water. What is the weight of the rock?

Spanish-Thank you
Thank you Ms. Sue for sending this-I'll check back later to see if there is an answer