16x^4 -81 =(ax^2+b)(cx+d)(cx – d) In the equation above, a, b, c, and d are constants. If the equation is true for all values of ac,
what is the sum of a, b, c, and d?

2. your driving record a. is totally confidential. b. may be available to the public. c. is available only to your employer with your authorization.

All of these sentences include commonly confused homophones. which sentence is correct? you put too much sugar on your breakfast serial. my father grows vegetables and flours in his garden. will someone me untie the knot in my shoelace? when did the captain set sale on his trip to north america?

Ateacher attaches a ball to a meter long string and whirls it around in a horizontal circle at constant speed. the teacher explains that the string is what makes the ball go in a circle. why is the string necessary? a) the string is needed to apply a torque to the ball. b) the string is needed to push on the ball to get it up to speed. c) circle motion requires an inertia which is provided by the string. d) circle motion requires a force to give it a centripetal acceleratio