(c) Prove that the equation of the bisectors of the angles between 12x - 5y + 7 = 0 and
4x - 3y + 8 = 0 are at right angles.​

The system of equations graphed below has how many solutions?

Aformual for 8 bottles of window cleaner calls for 6 cups of rubbing to customers alcohol 2 1/4 gallons of water and 1 1/2 cups of ammonia alcohol would the forula call if a factory made 1,280 bottles for stores to sell to customers

Reduce fractions expressing probability to lowest terms. in 3,000 repetitions of an experiment, a random event occurred in 500 cases. the expected probability of this event is?