The function f is defined for all real numbers x by f (x) = ax^2 + bx + c, where a , b , and c are constants and a is negative. In the xy-plane, the x-coordinate of the vertex of the parabola y = f (x) is −1. If t is a number for which f (t) > f (0), which of the following must be true?

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his first public project he is asked to create a small scale drawing. the garden is a right triangle with base 25m and height 30m. are you trying to solve for the last side/hypotenuse? the irrational form of the answer would be 5\sqrt{61}

16.80 times .20= 3.36

step-by-step explanation:

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92