Verify the identity.tan2 x = sec2 x - sin2 x - cos2 x
What will be an ideal response?
tan2 x = sec2 x - 1 = sec2 x - (sin2 x + cos2 x) = sec2 x - sin2 x - cos2 x.
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Verify the identity.(1 + tan2 ?)(1 - sin2 ?) = 1
What will be an ideal response?
The graph of either a cubic or quartic polynomial f(x) with leading coefficient ±1 and integer zeros is shown. Write the complete factored form of f(x).
A. f(x) = x(x + 2)(x + 1)(x - 3) B. f(x) = x(x - 2)(x - 1)(x + 3) C. f(x) = x(x - 2)(x + 1)(x + 3) D. f(x) = x(x + 2)(x - 1)(x - 3)
Solve.Andy wants to buy a refrigerator for $699, a stove for $459, and a dishwasher for $349. Round each cost to the nearest hundred to estimate the total cost.
A. $1400 B. $1600 C. $1300 D. $1500
Solve.If the force acting on an object stays the same, then the acceleration of the object is inversely proportional to its mass. If a force acts on an object with a mass of 80 kilograms so that it accelerates at 
per second per second, then find the acceleration of an object with a mass of 
that is acted on by the same force.
A. 10 meters per second per second B. 80 meters per second per second C. 90 meters per second per second D. 81 meters per second per second