A certain bowler can bowl a strike 90% of the time. What is the probability that she a) goes 2 consecutive frames without a strike? b) makes her first strike in the frame? c) has at least one strike in the first frames? d) bowls a perfect game (12 consecutive strikes)

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).

See attachment below and find the equivalent of tan(∠qsr)

The graph shows the decibel measure for sounds depending on how many times as intense they are as the threshold of sound. noise in a quiet room is 500 times as intense as the threshold of sound. what is the decibel measurement for the quiet room? 20 decibels28 decibels200 decibels280 decibels