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goblinko [34]
3 years ago
7

Which property allows you to write the expression (3 + 7i) + (8 − 6i) as (8 − 6i) + (3 + 7i)?

Mathematics
1 answer:
rodikova [14]3 years ago
3 0

Answer:

3+7i

Step-by-step explanation:

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What is the absolute value of the complex number -4-√2
Zepler [3.9K]
|a+bi| = √(a² + b²)

-4-√2 i -> take a = -4 and b = -√2

|-4-√2 i| = √[ (-4)² + (<span>-√2)² ]
               = </span><span>√[ 16 + 2<span> ]
               </span></span><span>= √[ 18 ]</span> = <span>√[ 9 * 2 ]
               = 3√2
the absolute value is 3√2</span>

6 0
3 years ago
Plzzzzz help i’ll mark brainliest!!!
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Answer:

1)4m + 11 <60

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2 years ago
Consider the one-sided confidence interval expressions for the mean of a normal population. Round your answers to 2 decimal plac
ser-zykov [4K]

Answer: a) 0.84  b) 0.67  c) 1.28

Step-by-step explanation:

Using the standard normal distribution table for z-value , we have

(a) The value of z_{\alpha} would result in a 80% one-sided confidence interval : z_{(1-0.80)}=z_{0.20}=0.8416\approx0.84

(b) The value of z_{\alpha} would result in a 85% one-sided confidence interval : z_{(1-0.85)}=z_{0.25}=0.6744897\approx0.67

(c) The value of z_{\alpha} would result in a 90% one-sided confidence interval : z_{(1-0.90)}=z_{0.10}=1.2815515\approx1.28

6 0
3 years ago
The two-way table shows the distribution of book style to genre. Miguel claims that given that the book is paperback (PB) does n
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Answer:

Yes, the two events are independent because P(NF|PB)=P(NF).

Step-by-step explanation:

5 0
3 years ago
30. 3 x (5 + 6) = 33<br>33. 14 - (8 - 2) - 1 =<br>36. (3 + 2) × (4 + 6) =<br>39. 6 x 4 + 5) =​
Vanyuwa [196]

Answer:

39. 29

36. 50

33. 7

30. 33

Step-by-step explanation:

39. According to the Order of Operations, in this case, Subtraction & Addition are evaluated after Division & Multiplication:

6 \times 4 + 5 = 24 + 5 = 29

36. Evaluate everything since everything is wrapped in parentheses:

(3 + 2) \times (4 + 6) = 5 \times 10 = 50

33. Evaluate everything inside of parentheses FIRST:

14 - (8 - 2) - 1 = 14 - 6 - 1 = 7

I am joyous to assist you anytime.

7 0
3 years ago
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