3 years ago

Does anyone know how to solve this??

Mathematics

1 answer:

Art [367]3 years ago

6 0

It is -8x -2y is -4 then what is x and y?!

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What is 1,000 divided by 38

alina1380 [7]

26.315789, you should use a caculator

7 0

3 years ago

Harrison can purchase 4 dvds for $19.99 or 6 dvds for $22.50 which is the better deal?

adelina 88 [10]

$19.99 x 4 = $79.96

$22.50 x 6 = $135

$19.99 x 6 = $119.94

$22.50 x 4 = $90

The best answer to this choice is 4 dvds for $19.99. why?, because if it was 6 or 4 dvds for $19.99 the price would be more inexpensive then the price for $22.50, because if it was 22.50 x 4 or 6 dvds the price would be more expensive.

8 0

3 years ago

Find the complex fourth roots \[-\sqrt{3}+\iota \] in polar form.

____ [38]

Let $z=-\sqrt3+i$ . Then

$|z|=\sqrt{(-\sqrt3)^2+1^2}=2$

$z$ lies in the second quadrant, so

$\arg z=\pi+\tan^{-1}\left(-\dfrac1{\sqrt3}\right)=\dfrac{5\pi}6$

So we have

$z=2e^{i5\pi/6}$

and the fourth roots of $z$ are

$2^{1/4}e^{i(5\pi/6+k\pi)/4}$

where $k\in\{0,1,2,3\}$ . In particular, they are

$2^{1/4}e^{i(5\pi/6)/4}=2^{1/4}e^{i5\pi/24}$

$2^{1/4}e^{i(5\pi/6+2\pi)/4}=2^{1/4}e^{i17\pi/24}$

$2^{1/4}e^{i(5\pi/6+4\pi)/4}=2^{1/4}e^{i29\pi/24}$

$2^{1/4}e^{i(5\pi/6+6\pi)/4}=2^{1/4}e^{i41\pi/24}$

7 0

3 years ago

Salina's age is one-quarter the age of her aunt. If a represents her aunt's age, which expression represents Salina's

alukav5142 [94]

Answer:

D. A over 4

Step-by-step explanation:

One quarter is equal to $\frac{1}{4}$ . If her aunt is age 'a', than Salina's age is a/4

Hope this helps.

4 0

3 years ago

Read 2 more answers

Alex buys 24 apples from the supermarket. When he gets home, he finds that 6 apples are bad. What percentage of the apples are b

Masteriza [31]

The percentage of apples that are bad is 25%. This is because 25% of 24 is 6. I hope this helped!

5 0

3 years ago