Mathematics: I need help fast pls help

I need help fast pls help - id7371904, ComicSans01

ctyrector

01.02.2022

third option

Step-by-step explanation:

Using the rule of radicals

$\frac{\sqrt{a} }{\sqrt{b} }$ = $\sqrt{\frac{a}{b} }$ and $\sqrt{-1}$ = i

Given

$\frac{\sqrt{-12} }{\sqrt{6} }$ = $\sqrt{\frac{-12}{6} }$ = $\sqrt{-2}$ = $\sqrt{2}$ × $\sqrt{-1}$ = i $\sqrt{2}$

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ezellcarly

12.02.2023

x=3

Step-by-step explanation:

We are taking 2 times the sum ( addition) of 18 and x

2 ( 18+x) = 42

Divide each side by 2

2 /2 ( 18+x) = 42/2

18+x = 21

Subtract 18 from each side

18+x-18 = 21-18

x = 3

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