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k0ka [10]
3 years ago
10

Can anyone help me solve this problem: 3i(-5i)

Mathematics
1 answer:
katovenus [111]3 years ago
4 0
The answer is -15i^2

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The point (4, 3) is reflected across the x-axis. In what quadrant will the new coordinate be?
lawyer [7]

It will be in the fourth quadrant

8 0
3 years ago
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From a sample of 37 graduate​ students, the mean number of months of work experience prior to entering an MBA program was 35.15.
kiruha [24]

Answer: (29.35, 40.95)

Step-by-step explanation:

Formula to find the confidence interval for population mean :-

\overline{x}\pm z^*\dfrac{\sigma}{\sqrt{n}}

, where \overline{x} = sample mean.

z*= critical z-value

n= sample size.

\sigma = Population standard deviation.

As per given , we have

\overline{x}=35.15

\sigma=18

n= 37

Using z-table, the critical z-value for 95% confidence = z* = 1.96

Then, the confidence interval for the population mean will be :

35.15\pm (1.96)\dfrac{18}{\sqrt{37}}

=35.15\pm (1.96)\dfrac{1.7}{6.08276}

=35.15\pm (1.96)(2.95918)

\approx35.15\pm5.80

=(35.15-5.80,\ 35.15+5.80)=(29.35,\ 40.95)

Hence, a 95​% confidence interval for the population​ mean = (29.35, 40.95)

8 0
3 years ago
There are 40 students in a class. Three-fifths (1/5) of the students are boys.
horsena [70]

Answer:

a) 24

b) 16

Step-by-step explanation:

a) Total Students = 40

Boys= 40*(3/5) = 24

b) Total Students= 40

Boys= 24

Girls= (40-24) = 16

4 0
3 years ago
It Is generally believed that electrical problems affect about 14% of new cars. An automobile mechanic conducts diagnostic tests
trasher [3.6K]

Answer:

hla amgx q tal están queriendo q te ayude yo sé cómo te puedo ayudar para q te saques buenas notas

Step-by-step explanation:

primero me das la corona y te lo digo sii

4 0
3 years ago
Bradon has 32 stamps.He wants to display the stamps in rows,with the same number of stamps in each row.
ExtremeBDS [4]

8*4=32

8 ROWS WITH 4 STAMPS IN EACH ROW


3 0
3 years ago
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