Work out the lengths of sides a and b.
give your answers to 1 decimal place.

What is the nth term rule of the linear sequence below? 27 , 25 , 23 , 21 , 19 , . .

Draw a tape diagram to represent each situation.for some of the situations,you need to decide what to represent with a variable andre bakes 9 pans of brownies.he donates 7 pans to the school bake sale and keeps the rest to divide equally among his class of 30 students

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.