Factorise each of the following.

a) 6rt - 3st + 6ru - 3su

b) 7mn - 21n + 35m - 105

c) 64 - 8j + 16k - 2jk

d) 3a^2 - a^2b + 3ac - abc

e) 5x^2 + 10x + x^2y + 2xy

f) 2m^2 - m^2n + 2mn - mn^2

A school is repainting some of its classrooms. Each classroom is repainted with 5.5 gallons of paint. Write and solve an equation to determine the gallons of paint the school must purchase if they repaint 18 classrooms. Idk how to write the equation

A handful of chewing gum contains 5 red pieces out of 11. What is the probability that a randomly selected piece of gum is NOT red?

What adds to 1 and multiplies to - 56

What percent of 1600 is 20?

Find the common difference for the sequence shown. 56, 49, 42, 35, ... a. - 12 b.-7 c. 7

Pre-election survey showed that two out of three eligible voters would cast ballots in the county election. There are 240,000 eligible voters. How many people are expected to vote?

Solve this equation 8-x2 = - 17

2 railway station at a distance of 96 km from each other one train covr this distance in 40 min les then other the spedd of 1st train is 12km/h faster then that of the second

How do you convert 52 3/10 % to a decimal

Express 19.07 as a mixed number.