2 years ago

What is the square root of -1?

Mathematics

1 answer:

lora16 [44]2 years ago

4 0

Answer:

Step-by-step explanation:

i means imaginary because whatever you try you can't get a number which squared gets a negative number.

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Shalnov [3]

Answer:

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2 years ago

Read 2 more answers

What is the domain for each function below? Choose the correct inequality symbol from the drop down menu and fill in the blank w

erik [133]

Answer:

$x \le 3$

$x \ge 0$

Step-by-step explanation:

The functions, missing from the question are:

$f(x) = \sqrt{3 - x$

$f(x) = \sqrt{3 x$

Required

Determine the domain

To get the domain, means we want to get the possible values of x.

(a)

$f(x) = \sqrt{3 - x$

Equate 3 - x to 0

$3 - x = 0$

Solve for x

$-x = -3$

$x = 3$

From the calculated value of x above;

When x exceeds 3; f(x) = undefined

So: the domain is:

$x \le 3$

(b)

$f(x) = \sqrt{3x$

Equate 3x to 0

$3x = 0$

Solve for x

$x = 0$

From the calculated value of x above;

When x falls below 0; f(x) = undefined

So: the domain is:

$x \ge 0$

4 0

2 years ago

-4 is less than or equal to a, and 9 is greater or equal to w

My name is Ann [436]

Answer:

w => -4

w =<9

Step-by-step explanation:

6 0

3 years ago

What times what equals -20 and added together equals -8

Leto [7]

4 x -5 = -20 then 12 + -20 = -8

5 0

2 years ago

How did I get this????

hjlf

Basically get the total before discount and multiply it by the percentage so 12•0.15=1.8
which means you save 1.8, so then you subtract 12-1.8 and you receive 10.2

7 0

2 years ago