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If U1 and U2 are subspaces of the vector space V. Prove that U1+U2 is also a subspace of V? F(x) = 6x − 36. Evaluate f(2).? Do cheetahs hunt rhinos and if not then why? Solid hemisphere topped by a solid cone both have diameter 5cm and the height of the cone is 4cm find volume giving answer in 3 sig figs? Chapter 1 & 4 math test?