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2 years ago

Item 4

Mathematics

1 answer:

dybincka [34]2 years ago

5 0

Answer:

9440

Step-by-step explanation:

4% of 9000=360. Knowing that, we can do 9000-360 which equals 8640+800 is 9440. Hope this helps :)

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24 - c/12 = -89 what is x

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Answer:

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Step-by-step explanation:

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2 years ago

PLEASE HELP NOW ASAP!!!

IceJOKER [234]

She used the associative property which should only be used with positive numbers (sorry if it isn't the answer you're looking for)

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2 years ago

The diameter of a round rug is 42 inches. What is the approximate area of the rug?

Troyanec [42]

Answer:

Area of the 2 circles

= 2 pi r square root

= 2 x 3,14 x 21 x 21

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Step-by-step explanation:

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2 years ago

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

DaniilM [7]

Answer:

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

Step-by-step explanation:

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

Multiply and divide by the conjugate.

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

7 0

2 years ago