Homework Progress Round the following numbers to 2 significant figures:
a) 987
b) £432.75
c) 792 m

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14

Many newspapers carry a certain puzzle in which the reader must unscramble letters to form words. how many ways can the letters of emdangl be arranged? identify the correct unscrambling, then determine the probability of getting that result by randomly selecting one arrangement of the given letters.

Parabolas y=−2x^2 and y=2x^2+k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.