2 years ago

If 5/6 is divided by a certain fraction a/b, the result is 1/4. What is the fraction a/b?

Mathematics

1 answer:

vodka [1.7K]2 years ago

3 0

The fraction would be 10/3. Hope this helps!

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What is the term of the highest degree in the expression 3x2y-5xy7+8x4y5-6xy

skelet666 [1.2K]

Answer:

seems hard

Step-by-step explanation:

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4 0

2 years ago

Write the expression 2i^15-i^7 in the standard form a + bi

elixir [45]

$\bf 2i^{15}-i^7\qquad 
\begin{cases}
i^2=\sqrt{-1}\cdot \sqrt{-1}\implies \sqrt{(-1)^2}\implies -1\\\\
i^4=i^2\cdot i^2\implies -1\cdot -1\implies 1
\end{cases}\\\\
-----------------------------\\\\
2i^{4+4+4+2+1}-i^{4+2+1}\implies 2i^4i^4i^4i^2i^1-i^4i^2i^1
\\\\\\
(2\cdot 1\cdot 1\cdot 1\cdot -1\cdot i)-(1\cdot -1\cdot i)\implies -2i-(-i)
\\\\\\
-2i+i\implies -i\implies \boxed{0-i}$