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Morgarella [4.7K]
2 years ago
7

Simplify the number using the imaginary unit i.

Mathematics
2 answers:
BARSIC [14]2 years ago
5 0

Answer:

here

Step-by-step explanation:

Juliette [100K]2 years ago
3 0

Answer:

the correct answer is d

Step-by-step explanation:

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7x^2 - 16x - 15<br>please help find the factored form​
myrzilka [38]

Step-by-step explanation:

7x^×2-16x-15

14x^-16x-15

8 0
2 years ago
Anita plans to give her husband 3 shirts for his birthday. She narrows the search to 3 shirts from a selection of 17 shirts at D
Lunna [17]

Using the combination formula, it is found that she can select the shirts in 775,200 ways.

The order in which the shirt are chosen is not important, hence, the <em>combination formula</em> is used to solve this question.

Combination formula:

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by:

C_{n,x} = \frac{n!}{x!(n-x)!}

In this problem:

  • 3 shirts from a set of 17.
  • Then, 3 shirts from a set of 20.
  • They are independent, hence, to find the total, we multiply both combinations.

T = C_{17,3} \times C_{20,3} = \frac{17!}{3!14!} \times \frac{20!}{3!17!} = 680 \times 1140 = 775200

She can select the shirts in 775,200 ways.

To learn more about the combination formula, you can check brainly.com/question/25821700

5 0
2 years ago
In a race, there are 15 runners. trophies for the race are awarded to the runners finishing in first through fourth place. in ho
kiruha [24]

Answer:

32,760

Step-by-step explanation:

Took the test

7 0
2 years ago
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Simplify. 5(x+2)-3(x-2)+7x= Please Help!!! Make it legit!
polet [3.4K]

Answer: 9x + 16

Simplify the expression

7 0
1 year ago
Write the recurring decimal 0.25 as a fraction.<br> [0.25Means 0.2555...]
Alja [10]

Answer:

23 ÷ 90

Step-by-step explanation:

6 0
2 years ago
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