YR 11 SMK 2021 (Maths D Revision)

Calculate  $$\left(7\times10^{-3}\right)\times\left(3\times10^9\right)$$  

giving your answer in standard form

Solve the simultaneous equations $$2x+3y=0$$  

$$x+4y=-15$$  

Each interior angle of a regular polygon is p times each exterior angle. Find an expression, in terms of p, for an exterior angle.

The triangles ABC and XYZ are similar and $$\angle ABC=\angle XYZ$$   $$\angle BAC=x^o\ ,\ \angle YZX=y^o,\ where\ x\ne y$$  

Find  $$BC$$  

It is given that  $$f\left(x\right)=\frac{3+x}{2}$$  . Find  $$f^{-1}\left(x\right)$$  

$$2\left(4-x\right)<x-10$$  

Solve the inequality

By writing each number correct to two significant figures, estimate, correct to one significant the value of $$\sqrt{110.94-0.2034\times368.62}$$