exam Maths Puzzle Numerical Ability

A small firm produces both AM and AM/Fm car radios. The AM radios take 12h to produce, and the AM/FM radios take 20h. The production hours is limited to 300h per week. The plants c

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a hammer is dropped from a construction project 576 ft above the ground. the height h(in ft) of the hammer is mideled by the position equation h(t)=-16t^2+ 576 where t is the time i seconds. how long will take for the hammer to reach the ground? Hi May I have some help with finding solutions to this equation?

Find all real solutions of the following equation. (If there are extra answer boxes, enter NONE.)
x^5 + 216x^2 = 0