3 years ago

How did I do so far and what is the correct answers for each question

1 answer:

3 0

I think you forgot to square the 6. So V=(pi)*36*10 So when I multiply these numbers together the answer is actually 1,130.4 m³. I hope this helped you!

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Quick help :)

iren2701 [21]

1) √72z² = 6z √2 B.

2 * 6 * 6 = 72

2) C. √6

3 * 3 √6 - 4 * 2 √6 = 9√6 - 8√6 = √6

7 0

3 years ago

2+6i/2-4i = a + bi What is the value of a? What is the value of b?

Talja [164]

$\dfrac{2+6i}{2-4i}\\\\\\=\dfrac{2(1+3i)}{2(1-2i)}\\\\\\=\dfrac{1+3i}{1-2i}\\\\\\=\dfrac{(1+3i)(1+2i)}{(1-2i)(1+2i)}\\\\\\=\dfrac{1+2i+3i+6i^2}{1-(2i)^2}\\\\\\=\dfrac{1+5i-6}{1+4}~~~~;[i^2=-1]\\\\\\=\dfrac{5i-5}{5}\\\\\\=\dfrac{5(i-1)}5\\\\=i-1\\\\=-1+i\\\\\text{It is in a form of a +bi so,}~ a = -1~ \text{and}~ b = 1$