14. Which of the following ratios is not equal to the ratio 12:36?
(1) 3:9
(2) 5:15
(3) 9:36
(4) 10:30
(5) 16:48

What two criteria are needed for triangles to be similar

What is the length of the segment, endpoints of which are intersections of parabolas y=x2? 11 4 x? 7 4 and y=? 7 8 x2+x+ 31 8 ?

Amountain climber starts a climb at an elevation of 453 feet above sea level at his first rest stop he has climbed 162 feet and by his second rest stop he has climbed another 207 feet its getting late in the day so the climber starts his way down if the climber desends 285 feet how much does he need to ascend or descend to return to the original starting point