college math
How many different committees can be formed from 9 teachers and 39 students if the committee consists of 2 teachers and 3 students? In how many ways can the committee of 5 members be selected?
math
2x^4-11x^3-6x^2+64x+32=0
physics
How much friction force will be required if a car weighing 2100kg traveling at 28m/s rounds a curve of radius 59m banked at a 15 degree angle
physics
in the equation V=sqrt(r*g), what does sqrt stand for?
Math
3x-2y=0 x-y=-1
chemistry lab
Oh that's what it is? Thanks
chemistry lab
How does the presence of a common ion affect the solubility of a salt? Explain in terms of equilibrium.
Statistics
What spinner?
chemistry
thank great help! much appreciated
chemistry
Strong base is dissolved in 665 mL of 0.400 M weak acid (Ka = 3.69 × 10-5) to make a buffer with a pH of 3.94. Assume that the volume remains constant when the base is added. HA(aq) + OH-(aq) -> H2O(l) + A-(aq) Calculate the pKa value of the acid and determine the num...
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