Solve the equation.x3 - x = -5x2 + 5
A. - 5, 5
B. -1, 1, - 5
C. 25
D. 1, - 5, 5
Answer: B
Mathematics
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Solve the problem.A satellite dish has a parabolic cross section and is 10 feet deep. The focus is 9 feet from the vertex. Find the width of the satellite dish at the opening. Round your answer to the nearest foot.
A. 46 ft B. 42 ft C. 40 ft D. 38 ft
Mathematics
Divide and, if possible, simplify.
A. y2
B. y2
C. y2
D. y
Mathematics
Solve the problem.A certain radioactive isotope decays at a rate of 0.15% annually. Determine the half-life of this isotope, to the nearest year.
A. 333 yr B. 201 yr C. 5 yr D. 462 yr
Mathematics
Find decimal notation.10%
A. 0.01 B. 1 C. 0.1 D. -0.01
Mathematics