In which decade was sputnik i launched? a. 1930-1939 b. 1950-1959 c. 1960-1969 d. 1980-1989

Heena wants to measure the volume of a ball that is 24 cm across. how should she set up her equation?

Imagine you are standing in the antarctic during the southern hemisphere summer. the sky is clear and blue. there are no clouds in the sky. your shadow is cast on the icy ground. what is the color of the shadow?

Suppose that f : rn → rm and that a ∈ k, where k is a connected subset of rn . suppose further that for each x ∈ k there exists a δx > 0 such that f(x) = f(y) for all y ∈ bδx (x). prove that f is constant on k; that is, f(x) = f(a) for all x ∈ k