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marin [14]
3 years ago
15

Express the radical using the imaginary unit, i.

Mathematics
1 answer:
MrMuchimi3 years ago
7 0

Answer:

±3i

Step-by-step explanation:

Given the value ±√-9, we are to express the value using the imaginary number 'I'

±√-9 = ±√9×-1

= ±√9 × √-1

In complex number, √-1 = i

The expression becomes;

±√9 = ±3 × i

±√9 = ±3i

Hence the value in simplified form is ±3i

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4 0
4 years ago
If anyone can help with either one that’d be great
Volgvan

4.  Solve

1430 = 0.55t^2 + 550

1430 - 550 =880 = 0.55t^2

880/0.55 = 1600 = t^2

t= \pm \sqrt{1600} = \pm 40

On the positive answer makes sense.

Answer: Month 40

5. The throw ends when the height is zero (I guess we're ignoring rolling).

0 = -0.02x^2 + x + 6

x = \dfrac{-1 \pm \sqrt{1^2 - 4(6)(-0.02)}}{2(-0.02)}

Only the negative sign for the plus/minus will give a sensible, positive answer:

x = \dfrac{-1 - \sqrt{1^2 - 4(6)(-0.02)}}{2(-0.02)} = 55.4138

Answer: 55.4 feet

6 0
4 years ago
Write 43% as a decimal.
Natalija [7]

Answer:

0.43

Step-by-step explanation:

It's easy if you think of 43% as a decimal if you base it off 100. For example lets write a fraction about it: \frac{43}{100}. A decimal you can think of the same way. 0.43 is the same as saying 43% of 100 or 43/100.

7 0
4 years ago
What is 5^4 well it's just multiplying 5 by 5 four times
Olenka [21]
That's right !  So you're on your way to the solution.
Just follow your own suggestion.

           5  x  5  x  5  x  5  =  ?


(If you don't get 625, then go back and check your work.)
5 0
3 years ago
The number |x| is the distance between 0 and x. It can never equal a ____ number.​
ololo11 [35]

Answer:

Negative number

Step-by-step explanation:

For example, |-5| = 55. This is because -5 is considered to be 5 units away from 0.

If this helps mark me brainliest please.

5 0
3 years ago
Read 2 more answers
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