3 years ago

(3+8i) (3+8i) multiply

Mathematics

2 answers:

Serga [27]3 years ago

8 0

Answer:-55+48i

Step-by-step explanation:

Marrrta [24]3 years ago

7 0

Answer:

Step-by-step explanation:

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The expression (x^22) (x^7)^3 is equivalent to x^p. What is the value of p?

SpyIntel [72]

Answer:

x^87

Step-by-step explanation:

Multiplying x^22 and x^7 results in x^29.

Then we have:

(x^29)^3 = x^87

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A class has 6 boys and 15 girls. What is the ratio of boys to girls

Gnoma [55]

$the \ ratio \ is : \\ \\ boys \ to \ girls = 6:15= 2:5$

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Meridith runs at a rate of 190 meters per minute. use the formula d= r times t to find how far she runs in 6 minutes.

Mariulka [41]

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3 years ago

Adult entrance fees to amusement parks in the United States are normally distributed with a population standard deviation of 2.5

kondor19780726 [428]

Answer: 1.509

Step-by-step explanation:

The formula of Margin of Error for (n<30):-

$E=t_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$

Given : Sample size : n= 22

Level of confidence = 0.99

Significance level : $\alpha=1-0.99=0.01$

Using the t-distribution table ,

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Standard deviation: $\sigma=\text{ 2.5 dollars }$

Then, we have

$E=( 2.831)\dfrac{2.5}{\sqrt{22}}\approx1.509$

Hence, the margin of error for a 99% confidence interval for the population mean =1.509

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Maurinko [17]

Answer:

K=3,052

Step-by-step explanation:

18,010-14,958=3,052

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