Three pears and four apples cost 1.60. four pears and five apples cost 2.05. find the cost of each pear and each Apple.

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).

The measures of the legs of a right triangle are 15m and 20m . what is the length of the hypotenuse

Graph the system of equations on your graph paper to answer the question. {y=−x+4y=x−2 what is the solution for the system of equations? enter your answer in the boxes.