3 years ago

Muiltply (1.2 x 10^28) x (3 x 10 negative ^19). Expres the answer in scientific notation.

Mathematics

1 answer:

stira [4]3 years ago

8 0

The answer is A..... ..

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4 years ago

Solve for x. 2(1)=x+1

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3 years ago

2. Describe how to use the conjugate to divide 2 − i by 3 + 2i, and then find the quotient.

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$\frac{4}{13}-\frac{7}{13}i$

Step-by-step explanation:

$\frac{2-i}{3+2i}$

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The conjugate is the denominator with the sign of the complex number the opposite of the denominator.

$\frac{2-i}{3+2i}\frac{3-2i}{3-2i}\\ =\frac{2\times (3-2i)-i\times (3-2i)}{3^2-(2i)^2}\\ =\frac{6-4i-3i+2i^2}{9+4}\\ =\frac{4-7i}{13}\\ =\frac{4}{13}-\frac{7}{13}i$

Quotient = $\frac{4}{13}-\frac{7}{13}i$

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3 years ago