Find the reciprocal of the following:
a. 36
b. 4.2 ð 102
c. 6.4 ð 10-3
a. 36
b. 4.2 ð 102
c. 6.4 ð 10-3
Mathematics
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Find the exact value using a double-angle identity.cos 
A. 1
B. -1
C. 0
D. - 
Mathematics
Provide an appropriate response.Solve the equation by using quadratic formula: 2p2 + p - 1 = 0
Fill in the blank(s) with the appropriate word(s).
Mathematics
The graph and equation of a polynomial f(x) are given. Determine the number of real zeros and the number of imaginary zeros.f(x) = x2 + 4x + 7
A. no real zeros; no imaginary zeros B. no real zeros; two imaginary zeros C. one real zero; one imaginary zero D. two real zeros; no imaginary zeros
Mathematics
Decide whether the figure is convex or concave.
A. Convex B. Concave
Mathematics