Determine the possible number of positive real zeros and negative real zeros of the polynomial function using Descartes' rule of signs.f(x) = -3x5 - 8x4 - 4x3 + 2x2 + x + 16
A. 1 positive zero, 3 or 1 negative zeros
B. 1 positive zero, 4 or 2 negative zeros
C. 1 positive zero, 4, 3 or 1 negative zeros
D. 1 positive zero, 2 or 0 negative zeros
Answer: C
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Find the magnitude and direction angle (to the nearest tenth) for each vector. Give the measure of the direction angle as an angle in [0,360°].
A. 16
; 135°
B. 16; 45°
C. 32; 45°
D. 16; 225°
Identify the type of curve that each equation represents by evaluating B2 - 4AC. 4x2 + 3xy - y2 - 8x + 2y = 0
A. Parabola B. Ellipse C. Hyperbola
A container contains a large unspecified number of ping-pong balls. A student takes 80 balls from the container, marks them with a blue dot, returns the marked balls to the container, and thoroughly mixes the balls. She then takes 80 balls again from the container. Of these, 16 have blue dots. She now wants to use this data to estimate the total number of ping-pong balls in the container.The best estimate for the percentage of ping-pong balls in the container that are marked is
A. 15%. B. 5%. C. 10%. D. 20%. E. none of these
Provide an appropriate response.The total of all the monthly payments plus the amount of the mortgage is equal to the total cost of interest.
A. True B. False