** ** the probability that a city bus is ready for service is 89%. the probability that a city bus is ready for service and has a working radio is 74%. find the probability that a bus chosen at random has a working radio given that is ready for service. round to the nearest tenth of a percenta. 87.3%b. 83 1%c. 15.0%d. 12%

The average human heart beats 1.15 \cdot 10^51.15⋅10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65⋅10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year. how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

If value of cos330° is √3/2 then find tan165°.