Question

Look at attached image please

Answer 1

• X=20
• Y=40
• Z=60

We need ratio

$\\ \tt\hookrightarrow X:Y:Z=20:40:60=1:2:3$

#2

$\\ \tt\hookrightarrow \dfrac{\sqrt{3}(\sqrt{3}+\sqrt{2})}{3-2}$

$\\ \tt\hookrightarrow 3+\sqrt{6}$

#b

$\\ \tt\hookrightarrow \dfrac{\sqrt{5}+2\sqrt{2}(2\sqrt{5}+\sqrt{2})}{20-2}$

$\\ \tt\hookrightarrow \dfrac{14+5\sqrt{10}}{18}$

#15

• y=√x

Graph attached