A clothing manufacterer purchased 60 metres of cotton and 90 metres of wool for a total cost of $1800. Another purchase, at the same prices, included 80 metres of cotton and 20 metres of wool for a total cost of $1000. Find the cost per metre of the cotton and the wool.

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.

Use the expression below.–4b + 8c + 12 – 8b – 2c + 6part asimplify the expression. enter your answers in the boxes. b + c + part bfactor the simplified expression using the gcf. a. 2(–2b + c + 3) b. 3(–2b + c + 3) c. 4(–2b + c + 3) d. 6(–2b + c + 3)part cwhat is the value of the expression when b = 2 and c = –3? enter your answer in the box.

Explain how you divide powers with like bases.discuss why the bases have to be the same.how are these rules similar to the rules for multiplying powers with like bases.