Summer School Assignment #1

Find the area of triangle ABC

Express 7.178 to 2 decimal place

Find the simple interest on $1,498 invested for 6 months at a rate of 6% per annum

Express 10.48 to 3 significant figures

By selling an article for $588 a salesman made a loss of 40%. What was the cost price of the article?

Solve the equation $$15-4x=2\left(3x+1\right)$$

A total of 1,200 students attend Top View High School. The ratio of teachers to students is 1:30. How many teachers are there at the school?

Factorize completely: $$4y^2-z^2$$

Simplify: $$7\frac{1}{3}+11\frac{2}{6}+1\frac{1}{4}$$

Simplify: $$\frac{1\frac{1}{2}-\frac{2}{5}}{4\frac{2}{5}\times\frac{3}{4}}$$