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FromTheMoon [43]
3 years ago
7

I just need help with #15 … can someone please help me

Mathematics
1 answer:
Kazeer [188]3 years ago
7 0

Answer:

450

Udjdjdjdndkdkdkdjejeud

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Why is the answer B? Plz explain.
polet [3.4K]
The original can be rewritten as \sqrt{-1*6}* \sqrt{-1*24}.  Because i^2 is equal to -1, we can replace the -1 in each radicand with i^2, like this:  \sqrt{i^2*6}* \sqrt{i^2*24}.  Now, i-squared is a perfect square that can be pulled out of each radicand as a single i.  i \sqrt{6}*i \sqrt{24}.  24 has a perfect square hidden in it.  4 * 6 = 24 and 4 is a perfect square.  So let's break this up, step by step.  i \sqrt{6}*i \sqrt{4*6}  and then  i \sqrt{6}*2i \sqrt{6}.  We will now multiply the i and the 2i, and multiply the square root of 6 times the square root of 6:  2i^2 \sqrt{36}.  36 itself is a perfect square because 6 * 6 = 36.  So we will do that simplification now.  2i^2(6).  Multiplying the 2 and the 6 gives us 12i^2.  But here we are back to the fact that i-squared is equal to -1, so 2(-1)(6) = -12.  See how that works?
5 0
3 years ago
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The quotient of a number and 3 less than twice the number
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"The quotient of a number and 3 less than twice the number" would translate to the expression x/(2x-3)

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A 66​-ft vertical post casts a 14​-in shadow at the same time a nearby cell phone tower casts a 119​-ft shadow. How tall is the
sergij07 [2.7K]
Set up a proportion then cross multiply to solve.
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Answer:

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Step-by-step explanation:

The reason is that the square-root of most numbers is an irrational number because the answer we have can not be written as p/q form. For example, if we take the example of √2 then the answer we have is "1.4142135623730950..." which can not be written in p/q form. Hence taking square-root of numbers will most likely give an irrational number.

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3 years ago
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No! 2^-3 is not equal to -3^2
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4 years ago
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