(ii) Show that when x is a whole number
7(2x + 1) + 6(x + 3)
is always a multiple of 5

Find the area of a trapezoid with bases 14 cm and 18 cm and height 10 cm. 160 cm2 140 cm2 180 cm2 126 cm2

Can someone factor this fully? my friend and i have two different answers and i would like to know if either of them is right. you in advance. a^2 - b^2 + 25 + 10a

Atriangle has side lengths of x, x+11, and 3x+5. what is the perimeter?