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navik [9.2K]
3 years ago
6

Help me pleasssseeeeeee

Mathematics
2 answers:
sesenic [268]3 years ago
8 0

Answer:

{ \bf{b. \:  \:  {i}^{47} }}

Step-by-step explanation:

{i}^{46}  = ( {i}^{2} ) {}^{23}  =  - 1 \\  \\  {i}^{47}  = (i)( {i}^{46} ) = ( - 1 \times i) =  - i \\  \\  {i}^{48}  = ( {i}^{2} ) {}^{24}  = 1 \\  \\  {i}^{49}  = (i)( {i}^{48}) = (1 \times i) = i

Jlenok [28]3 years ago
3 0

Answer:

i^{46} = -i

~~~~~~~~~~~~~~~~~~~

46/4 = 11 remainder 2 = -i

47/4 = 11 remainder 3 = 1

48/4 = 11 remainder 0 =  i

49/4 = 11 remainder 1 = -1

Step-by-step explanation:

i = \sqrt{-1} = i  (remainder 0)

i^{2} = \sqrt{-1} * \sqrt{-1} = -1 (remainder 1)

i^{3} = \sqrt{-1} * \sqrt{-1} * \sqrt{-1}= -1  * \sqrt{-1} = -i (remainder 2)

i^{4} = \sqrt{-1} * \sqrt{-1} * \sqrt{-1} * \sqrt{-1}= -1  * -1  = 1\\ (remainder 3)

i^{5} = \sqrt{-1} * \sqrt{-1} * \sqrt{-1} * \sqrt{-1}* \sqrt{-1}=  1 * \sqrt{-1} = i\\ (remainder 0)

The pattern repeats every FOUR in the exponent

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Vikki [24]

Answer:

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Step-by-step explanation:

1000 / 10 = 100 dollar discount he pays 900

900 / 10 = 90 they got a 90 dollar discount 810

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656.1 / 10 = 65.61 they got a 65.61 dollar discount 590.49

3 0
2 years ago
What is 6 divided by 3/8?
algol13

Answer:

<h2>16</h2>

Step-by-step explanation:

6 \div  \frac{3}{8}  = 6 \times  \frac{8}{3}  \\

=  \frac{6 \times 8}{3}  \\  \\  =  \frac{48}{3}  =1 6

4 0
3 years ago
Read 2 more answers
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Soloha48 [4]

Answer:

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Step-by-step explanation:

sorry but I need these points

8 0
3 years ago
Read 2 more answers
F(x) = 5x ^ 2 and g(x) = x + 1 find (fg)(x)
Vilka [71]

According to the question given,f(x)=5x^2,g(x)=x+1 (fg)(x)  is f(x).g(x)=5x^3+5x^2

Which is not given in the options.

Step-by-step explanation:

We are given:

f(x)=5x^2

g(x)=x+1

We need to find (fg)(x)

Solving:

(fg)(x)=f(x).g(x)\\f(x).g(x)= 5x^2*(x+1)\\f(x).g(x)=5x^3+5x^2

According to the question given, (fg)(x)  is f(x).g(x)=5x^3+5x^2

Which is not given in the options.

Keywords: Composite functions

Learn more about Composite functions at:

  • brainly.com/question/10772025
  • brainly.com/question/4939434
  • brainly.com/question/1774827

#learnwithBrainly

4 0
3 years ago
Which system of equations represents this situation? 25 Points!! Look at pictures
seropon [69]

Answer:

C

Step-by-step explanation:

the variables in this system of equations are b and p these represent distance walked.

4b + 5p = 2 represents the total amount of time the walk takes

b + p = 8 represents the total distance walked :)

The answer isn't A only because the word problem states that from her house to the beach, it should be represented as b. And p for the beach to the park.

7 0
3 years ago
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