factorise:x3+3x2+4x-12, 7 gnomes were sitting in a row on 7 seats, one gnome wanted to sit right next to another because he wanted to cheer him up, how many ways can the gnomes be placed?. Which line is parallel to y = 3x + 7?
A: 7y + x = 3 B: y − 3x + 9 = 0 C: 2y + 3x = 9 D: y + 3x − 7 = 0. How many solutions does x2+16=25 have?Calculate the approximate circumference of a circle whose area is approximately
113 cm2.