In ΔOPQ, the measure of ∠Q=90°, OP = 7.7 feet, and PQ = 4.1 feet. Find the measure of ∠O to the nearest degree.

Mr and mrs smith buy tickets for themselves and their four children. the cost of an adult ticket is ? 6 more than the adult ticket. the total cost of the six tickets is ? 40.50 work out the cost of an adult ticket. in your working let c be the cost of the child ticket and a be the cost of the adult ticket.

Complete the solution of the equation. find the value of y when x equals -5. -4x - 8y = -52

Out of $20$ creepy-crawly creatures in a room, $80\%$ are flies and $20\%$ are spiders. if $s\%$ of the total legs belong to spiders, what is $s$?