An adult ticket cost 20 dollars a piece for2 adults and 10 a piece for 4 children how much will cost for everyone

What constants do you need to add to each of the following quadratic equations to complete the square? 2x2 - 3x = 0 x2 - 8x = 0 2x2 - 11x = 18

Phillip had some bricks. he stacked them in 6 equal piles. which expression shows the number of bricks phillip put in each pile? let the variable m stand for the unknown number of bricks. m + 6 m÷6    m−6    6m

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.