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GalinKa [24]
3 years ago
12

Simplify the given expression below: (−3 + 2i) ⋅ (2 + i) A. −8 + i B. −6 + 3i C. −3 + 4i D. −1 + 2i

Mathematics
1 answer:
oksian1 [2.3K]3 years ago
7 0

Answer:

-8 + i

Step-by-step explanation:

(-3 + 2i) * (2 + i)

= -6 + -3i + 4i + 2i^2

= -6 + i - 2

= -8 + i

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Find the area of the figure below
nalin [4]

Answer:

36 I think, also to fintd the are of an object you count how many shapes its in the object:).

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3 years ago
The radius of a circle is 4 m. Find its area in terms of <br> π<br> π.
wlad13 [49]

Answer:

16π

Step-by-step explanation:

Given:

\text{Radius of circle}: 4 \ \text{m}

<u>Formula:</u>

\text{Area of circle} = \pi r^{2}

Replace the radius in the formula:

\implies \text{Area of circle} = \pi (4)^{2}

Evaluate the area:

\implies \text{Area of circle} = \pi (4)(4)

\implies \text{Area of circle} = 16\pi

Since the question says to determine the area in terms of π, the final answer is 16π.

8 0
2 years ago
The formula for the surface area of a cylinder with radius r and height h is at times twice the product of the
MrMuchimi

Answer:

<em>2\pi \: rh + 2\pi {r}^{2}  = 2(t \times  {r}^{2} )</em>

Step-by-step explanation:

The TSA of the cylinder

2\pi \: rh + 2\pi {r}^{2}

In Mathematics, 'is' is =

Twice means 2( )

Product means ×

So we have

2\pi \: rh + 2\pi {r}^{2}  = 2(t \times  {r}^{2} )

as the answer.

6 0
3 years ago
A business owner collected data on the people working for her company. She determined the average number of minutes each employe
Naddika [18.5K]

Answer:

The comparison using median and IQR is best because one of the graphs is not symmetrical.<em> </em>

Step-by-step explanation:

The following information is missing

<em>A box plot titled Number of Minutes Women Spend on Breaks. The number line goes from 30 to 70. The whiskers range from 30 to 54, and the box ranges from 34 to 50. A line divides the box at 48.  </em>

<em>A box plot titled Number of Minutes Men Spend on Breaks. The number line goes from 30 to 70. The whiskers range from 30 to 68, and the box ranges from 36 to 60. A line divides the box at 48.  </em>

<em>The business owner uses the median and IQR to determine the center and variability of the data sets. Which best describes the comparison? </em>

<em>The comparison would be more accurate using the mean and MAD because one of the graphs is symmetric. </em>

<em>The comparison would be more accurate using the mean and MAD because the median of both data sets is the same. </em>

<em>The comparison using median and IQR is best because one of the graphs is not symmetrical. </em>

<em>The comparison using median and IQR is best because the median is greater than the IQR for both data sets.</em>

<em />

Mean and MAD are useful for comparison when both data sets are symmetrical.

In the women box plot the Q1 is at 34, the median is at 48, and the Q3 is at 50, so it is not symmetrical (the difference between the median and the Q1, and the Q3 and the median is not the same)

8 0
4 years ago
Shiraz want to create an equally tricky arithmetic sequence she wants the 5th term of the sequence to equal 11 and 50th Cham to
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i dont have an idea :)

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3 years ago
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