Calculate $\sqrt[3]{21.2-\dfrac{5}{1.04}}$, giving your answer correct to $3$ significant figure

Question

Calculate $\sqrt[3]{21.2-\dfrac{5}{1.04}}$, giving your answer correct to $3$ significant figures. [1] Write the following numbers in order of size, starting with the smallest.$$ \frac{18}{25}, \quad -0.7, \quad 0.84^2, \quad 0, \quad \frac{1}{\sqrt{2}} $$ [2]

Accepted Answer

(a) $2.54$ (b) $-0.7, 0, 0.84^2,\frac1{\sqrt2},\frac{18}{25}$

Algebraic Expressions, Identities and Formulae

Algebraic Expressions, Identities and Formulae

Solution:

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