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3 years ago

Please Help Can someone explain where the 4i to the square root of 3 came from?

Mathematics

1 answer:

Y_Kistochka [10]3 years ago

5 0

Answer:

see explanation

Step-by-step explanation:

note that $\sqrt{-1}$ = i

$\sqrt{64-112}$

= $\sqrt{-48}$

= $\sqrt{16(3)(-1)}$

= $\sqrt{16}$ × $\sqrt{3}$ × $\sqrt{-1}$

= 4 × $\sqrt{3}$ × i

= 4i $\sqrt{3}$

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Answer: I think it goes like this im pretty sure ;)

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3 years ago

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2 years ago

Maya is packing her backpack for hike. In one pocket, she puts in a 1/2 pound bag of trail mix,a water bottle weighing 2 1/8 pou

Rudik [331]

Total weight of three items is 2.875 pounds

Solution:

Given that,

Maya is packing her backpack for hike

From given,

$pound\ bag\ of\ trail\ mix = \frac{1}{2}\ pounds$

$water\ bottle = 2\frac{1}{8}\ pounds = \frac{17}{8}\ pounds\\\\flashlight = \frac{1}{4}\ pounds$

How much weight do these three items add to her backpack?

Add all these together

$Total\ weight = \frac{1}{2} + \frac{17}{8} + \frac{1}{4}\\\\Total\ weight = \frac{1 \times 4}{2 \times 4} + \frac{17}{8} + \frac{1 \times 2}{4 \times 2}\\\\Total\ weight = \frac{4}{8} + \frac{17}{8} + \frac{2}{8}\\\\Total\ weight = \frac{23}{8} = 2.875$