Are the lines y = –x – 4 and 5x + 5y = 20 perpendicular? explain.

yes; their slopes are equal.
yes; their slopes have product –1.
no; their slopes are not equal.
no; their slopes are not opposite reciprocals.

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

The school that imani goes to is selling tickets to the annual dance competition. on the first day of the ticket sales the school sold 7 adult tickets and 5 child tickets for a total of $96. the school took in $40 on the second day by seling 3 adult tickets . find the price of an adult ticket and the price of a child ticket. solve by using substitution elimination college prep algebra math heres the 2 equations i came up with 7x+5y=96 and 3x+2y= -40 show all workiv be stuck on this.

What is the measure of angle x? answer