Solve each system of equations 3x+4y-6z=-60 7x-5y+z=-37 2x+3y-z=-29 i got -8, -3,4

A25- foot ladder leans against a building and reaches a point of 23.5 feet above the ground .find the angle that the ladder makes with the building

Idon't want to fail summer school.the probabilities of contamination in medicine capsules due to the presence of heavy metals and different types of microbes are given in the table.the probability of capsule b having microbial contamination is (the same as, greater than, less than) the probability of capsule d having it.

Need answer asap (see image) (20 points)