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A 150kg horizontal beam is supported at each end. A 380-kg piano rests a quarter of the way from one end. What is the vertical force on each of the supports?
Group Homomorphism and Abelian Groups, Let phi: G ---> H be a group homomorphism. Show that phi[G] is abelian if and only if for all x, y in G, we have xyx^(-1)y^(-1) in ker(phi).
One researcher wishes to estimate the mean number of hours that high school students spend watching TV on a weekday. A margin of error of 0.25 hour is desired. Past studies suggest that a population standard deviation of 1.7 hours is reasonable.
Let G be k-critical graph with respect to vertex-arboricity (k>=3). Prove that for each vertex v of G, the graph G-v is not (k-1)-critical with respect to vertex-arboricity.
If we have 2 groups with 2 characteristics each, what would our critical value be with an alpha of .025?
The problem states: Find dw/dt (a) using the appropriate chain rule and (b) by converting w to a function of t before differentiating.
A new bridge is being constructed. The space between the support needs to be 1050 feet; the height at the center of the arch needs to be 350 feet. An empty tanker needs a 280 foot clearance to pass beneath it.
a baseball coach wants to place ads in teh outfield of his baseball field. the ads are in standard sheets of plywood. how many ads can he place in the outfield?
When using the substitution method, how can you tell if a system of linear equations has no solution?
Three students are doing an assignment.John has finished 4/5 of the assignment,Sarah has finished 3/4 and Jo has finished 2/3. Which student has done the most?
You have a ball on a wire that is twirled in a circular orbit with a radius of 3.6 m, and the centripetal force acting on the ball, that has a mass of 67 kg, is 286 N. What is the speed of the ball in orbit?
Radium-221 has a half-life of 30 sec. How long will it take for 79% of a sample to decay?
A manufacturing cell claims they make 500 parts per day. D etermine if their claim is correct.
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