A car is travelling at 90 km per hour. Breaks are applied so as to produce a uniform acceleration of - 0.5 m/^2. Find how far will the car go before it is brought to rest

Determine the mean and variance of the random variable with the following probability mass function. f(x)=( 729divided by 91) (1 divided by 9) superscript x baseline comma x equals 1,2,3 round your answers to three decimal places (e.g. 98.765).

15/16 as a decimal rounded to the nearest hundredth

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)