Which system is equivalent to StartLayout Enlarged left-brace 1st Row 3 x squared minus 4 y squared = 25 2nd row negative 6 x squared minus 2 y squared = 11 EndLayout?

225/100 of last years cost. write each fraction as a decimal and as a percent

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers