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Simora [160]
3 years ago
12

Simplify. -6i(5+3i) Enter your answer in standard form, in the box

Mathematics
2 answers:
Nimfa-mama [501]3 years ago
7 0

Answer:


Step-by-step explanation:


Naily [24]3 years ago
6 0

Answer:

Pretty sure the answer is 18-30i

Step-by-step explanation:

-30i - 18i^2

-30i - 18 x (-1)

-30i +18

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Please help!!!!!!
Andre45 [30]

Since we know one root, which is -3, we can use synthetic division to find (x+3) would need to be multiplied by to get the original polynomial. Then, we factor the quadratic to find the other two factors, which are 1/2 and -2

3 0
3 years ago
Solve for x.<br><br> A) 0.9<br> B) 160<br> C) 10<br> D) 1.1
creativ13 [48]

Answer:

C .10

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
why mathematics is the very important in a small business? is mathematics is helpful to you? explain​
kodGreya [7K]
Mathematics is very important in a small business is because when you make money transactions with other people you need to know how to count money correctly and your calculations can’t be wrong. Mathematics is definitely helpful to me because Artificial Intelligence is taking on jobs, so we have to step up our game.
7 0
2 years ago
A researcher surveyed 150 high school students and found that 68% played a musical insturment. What would be a reasonable range
maria [59]

Answer:

The reasonable range for the population mean is (61%, 75%).

Step-by-step explanation:

The interval estimate of a population parameter is an interval of values that consist of the values within which the true value of the parameter lies with a certain probability.

The mean of the sampling distribution of sample proportion is, \hat p.

One of the best interval estimate of population proportion is the 95% confidence interval for proportion,

CI=\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p(1-\hat p)}{n}}

Given:

n = 150

\hat p = 0.68

The critical value of <em>z</em> for 95% confidence level is:

z_{\alpha/2}=z_{0.05/2}=z_{0.025}=1.96

Compute the 95% confidence interval for proportion as follows:

CI=\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p(1-\hat p)}{n}}

     =0.68\pm1.96\sqrt{\frac{0.68(1-0.68)}{150}}\\\\=0.68\pm 0.0747\\\\=(0.6053, 0.7547)\\\\\approx (0.61, 0.75)

Thus, the reasonable range for the population mean is (61%, 75%).

5 0
3 years ago
Isip at kilos loob ng<br> paaralan​
Afina-wow [57]
Lol I actually laughed at this silly much ?
7 0
3 years ago
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