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Marianna [84]
2 years ago
6

Simplify the expression (3-i)-(2+6i)

Mathematics
1 answer:
vredina [299]2 years ago
8 0

Answer:5-5i

Step-by-step explanation:(3-i)-(2+6i) (3+2)-(6i-i) =5-5i

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0.7 =  \frac{7}{10}
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Given the expression ‘6 more than twice a number’, what is the value of the expression if the number is equal to 5?
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Answer:

Expression: 2x + 6

Value of the expression when x = 5: 16

Step-by-step explanation:

Let's first focus on the expression: '6 more than twice a number'. Twice a number is the same as saying two times a number. Let's have that number be represented by x. Twice a number would mean 2x, and 6 more than that would just be 2x + 6.

We'll then plug in 5 for x to get the value of the expressinn:

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Math will give brainleist
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Answer:

3 1/3

Step-by-step explanation:

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I have to solve for x
erastova [34]

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a radioactive sample contains 3.00 g of pure 11c, which has a half-life of 20.4 min. (a) how many moles of 11c are present initi
sveta [45]

The number of mole of pure 11C (carbon-11) initially present is 0.2727 mole

<h3>Description of mole </h3>

The mole of a substance is related to it's mass and molar mass according to the following equation

Mole = mass / molar mass

With the above formula, we can obtain the number of mole of pure 11C. Detail below:

<h3>How to determine the mole of 11C</h3>

From the question given, the following data were obtained:

  • Molar mass of 11C = 11 g/mol
  • Mass of 11C = 3 g
  • Mole of 11C =?

Mole = mass / molar mass

Mole = 3 / 11

Mole = 0.2727 mole

Therefore, the number of mole of pure 11C initially present is 0.2727 mole

Learn more about mole:

brainly.com/question/13314627

#SPJ4

8 0
1 year ago
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