4 years ago

Explain why the square root of -64 is undefined but the cubed root of -64 is defined in the real number system

1 answer:

5 0

Because there is no number that could be multiplied BY ITSELF and still be negative:
-2 x -2 = 4
2 x 2 = 4
But, cubed root works because a negative can be three times and still be negative:
-4 x -4 x -4 = -64
Hope this helps!

You might be interested in

Jabari owns 100 shares of Stock A and 45 shares of Stock B. For the past month, his stocks have been fluctuating inversely each

aniked [119]

This is how we solved and make the equation.
Stock A = 100
Stock B = 45

For the past months, his stocks inversely decreased.
Stock A = m cents / share
Stock B = n cents * share

So the equation is
= 100 (0.01m) + 45 (0.01n)
<span>= m + 0.45n</span>

6 0

3 years ago

On Monday 21 dvd's were checked out at the library. This is 3 less than half the amount of books check out that day. How many bo

Tanya [424]

The answer is 48. 21+3 is equal to half of the books so 24 times 2 is 48.

5 0

4 years ago

Read 2 more answers

What is the measure of the tangent AB?

HACTEHA [7]

Using formula AB^2 = BD *(CD + BD)

AB^2 = 16 * (16+9)

AB^2 = 16 * 25

AB^2 = 400

AB = sqrt(400)

AB = 20

5 0