All categories

3 years ago

20 points What is the square root of -16? -8i -4i 4i 8i

Mathematics

2 answers:

olga55 [171]3 years ago

8 0

Answer:

Step-by-step explanation:

Negative numbers don't have real square roots since a square is either positive or 0. The square roots of numbers that are not a perfect square are members of the irrational numbers. This means that they can't be written as the quotient of two integers. So you have to use the "imaginary number", i.

Finger [1]3 years ago

3 0

Answer: 4i

Step-by-step explanation:

You might be interested in

Sam made a square sign with an area of 410 square inches.What is the approximate perimeter of the square sign?

Masteriza [31]

Are you takeing the exam to.

4 0

3 years ago

Read 2 more answers

Find each quotient using long division 676 ÷ 13 (need the full thing fast lol)

ra1l [238]

Answer:

Step-by-step explanation:

Ok then "cracks knuckles" heres an image of the division! hope it helps.

3 0

2 years ago

Find the area of the shaded region.<br>pls do this with explanation.<br>

vladimir1956 [14]

Answer:

first find the area of the big rectangle = 12×14=168

area of the small unshaded rectangle =2×5×6=60

area of the shaded region = 168-60=108

6 0

3 years ago

Read 2 more answers

One more time!

CaHeK987 [17]

Since q(x) is inside p(x), find the x-value that results in q(x) = 1/4

$\frac{1}{4} = 5 - x^2\ \Rightarrow\ x^2 = 5 - \frac{1}{4}\ \Rightarrow\ x^2 = \frac{19}{4}\ \Rightarrow \\
x = \frac{\sqrt{19} }{2}$

so we conclude that
$q(\frac{\sqrt{19} }{2} ) = 1/4$

therefore

$p(1/4) = p\left( q\left(\frac{ \sqrt{19} }{2} \right) \right)$

plug $x=\sqrt{19}/2$ into p( q(x) ) to get answer

$p(1/4) = p\left( q\left( \frac{ \sqrt{19} }{2} \right) \right)\ \Rightarrow\ \dfrac{4 - \left( \frac{\sqrt{19} }{2}\right)^2 }{ \left( \frac{\sqrt{19} }{2}\right)^3 } \Rightarrow \\ \\ \dfrac{4 - \frac{19}{4} }{ \frac{19\sqrt{19} }{8}} \Rightarrow \dfrac{8\left(4 - \frac{19}{4}\right) }{ 8 \cdot \frac{19\sqrt{19} }{8}} \Rightarrow \dfrac{32 - 38}{19\sqrt{19}} \Rightarrow \dfrac{-6}{19\sqrt{19}} \cdot \frac{\sqrt{19}}{\sqrt{19}}\Rightarrow$

$\dfrac{-6\sqrt{19} }{19 \cdot 19} \\ \\ \Rightarrow -\dfrac{6\sqrt{19} }{361}$

$p(1/4) = -\dfrac{6\sqrt{19} }{361}$

3 0

3 years ago

Write a function G whose graph represents a reflection in the y-axis of the graph of f (x) = |2x–1|+3

crimeas [40]

Answer: Did you find an answer yet?? Lol

Step-by-step explanation:

8 0

3 years ago