Prove the identity.sin 4x = (4 sin x cos x)(1 - 2 sin2 x)
What will be an ideal response?
sin 4x = 2 sin 2x cos 2x = (4 sin x cos x)(1 - 2 sin2 x).
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Expand.(5x + 3)4
A. 1875x4 + 4500 x3 + 1350x2 + 1620x + 81 B. 625x3 + 1500x2 + 1350x + 540 C. 625x4 + 1500x3 + 1350x2 + 540x + 81 D. (25x2 + 15x + 9)4
Find the zeros for the polynomial function and give the multiplicity for each zero. State whether the graph crosses the x-axis or touches the x-axis and turns around, at each zero.f(x) = 3(x + 5)(x - 5)2
A. 5, multiplicity 1, touches x-axis and turns around; -5, multiplicity 2, crosses x-axis B. 5, multiplicity 1, crosses x-axis; -5, multiplicity 2, touches x-axis and turns around C. -5, multiplicity 1, crosses x-axis; 5, multiplicity 2, touches x-axis and turns around D. -5, multiplicity 1, touches x-axis and turns around; 5, multiplicity 2, crosses x-axis
Solve the problem.The average amount of money spent on laundry soap in 2006 by a family of three was $800. While the average amount of money spent by a family of four was $4000. Find the average rate of change of money spent on laundry soap with respect to family size.
A. $1.60 per person B. $320.00 per person C. $3200.00 per person D. -$3200.00 per person
Solve the problem.A construction company bought 1377 sheets of plywood at $6 per sheet. How much did it pay for the plywood?
A. $8262 B. $1371 C. $1383 D. $230