The probability that the noise level of a wide-band amplifier will exceed 2 db is 0.05 independently of every other amplifier. consider a concert hall with 12 such amplifiers. b) find the probability that at most two will exceed 2db. set up your equations in your work. also round your answer to the nearest three decimal places.

The pair of coordinates that do not represent the point( 5,150’) is a. (5,-210) b. (5,210) c. (-5,330) d. (-5,-30)

Which equation represents a direct linear variationa. y=x2b. y=2/5xc. y=1/xd. y=x+3

Statement reason 1. δabc is similar to δced. given 2. 3. definition of slope 4. slope of slope of definition of slope 5. slope of × slope of multiplying the slopes 6. slope of × slope of substitution property of equality 7. slope of × slope of simplifying the right side the table contains the proof of the relationship between the slopes of two perpendicular lines. what is the reason for statement 2? a. parallel line segments that meet a common perpendicular line are proportional in length. b. the lengths of vertical and horizontal sides in congruent triangles are in a common ratio. c. trigonometric identities determine the lengths of the legs in a right triangle. d. corresponding side lengths in similar triangles are proportional in length.