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dalvyx [7]
3 years ago
12

Perform the indicated operations. Write the answer in standard form, a+bi. -4 + 4i / -3-6i

Mathematics
1 answer:
vesna_86 [32]3 years ago
5 0

Answer:

\frac{ - 4  + 4i}{ - 3 - 6i}  \\  \frac{ - 4 + 4i}{ - 3 - 6i}  \times  \frac{ - 3 + 6i}{ - 3 + 6i}  \\  =  \frac{12 - 24i - 12i + 24 {i}^{2} }{ {( - 3)}^{2} -  {(6i)}^{2}  }  \\  =   \frac{ - 12 - 36i}{45}  \\  =  \frac{ - 12}{45}  \frac{ - 36i}{45}  \\ than \: you

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Which of the following expressions simplifies to a negative number? Select all that apply.
Contact [7]

Answer:

(-1)(-1)(-1)

(-1)(-1)(-1)(-1)(-1)

These, since they are all negatives and there are an odd number of terms.

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
A regular octagon has a radius of 6 ft and a side length of 4. 6 ft. A regular octagon has a radius of 6 feet and side lengths o
skad [1K]

The regular octagon has eight equal sides. Then the area of the regular octagon of side length be 4.6 is 102 ft².

<h3>What is a regular octagon?</h3>

It is a polygon that has eight equal sides. In a regular octagon, the opposite sides are parallel. And its diagonals are also equal and intersect at mid-point.

Given

A regular octagon has a radius of 6 ft and a side length of 4.6 ft.

We know the formula for the regular octagon.

Area of the regular octagon = 2(1 + \sqrt{2}) a²

Where a be the side of a regular octagon.

Then the area of the regular octagon will be.

\rm Area = 2 (1+\sqrt{2} ) a^2\\\\Area = 2*(1 + 1.414) *4.6^2\\\\Area = 2 * (2.414)* 21.16\\\\Area = 102.16

Thus, the area of the regular octagon of side length be 4.6 is 102 ft².

More about the regular octagon link is given below.

brainly.com/question/858868

6 0
2 years ago
The rate at which sand is poured into a bag is modeled by the function r given by r(t)=15t−2t2, where r(t) is measured in millil
balu736 [363]

Answer:

35 mililiters

Step-by-step explanation:

Given

r(t) = 15t - 2t^2

Required

Accumulated amount from t = 0 to 2

This implies that, we substitute the values of t from 0 to 2 in the function

r(0) = 15*0 - 2*0^2= 0

r(1) = 15*1 - 2*1^2= 13

r(2) = 15*2 - 2*2^2= 22

The accumulated sand (r) is:

t = r(0) + r(1) + r(2)

r = 0 + 13 + 22

r = 35

6 0
3 years ago
Which of the following is an equation?<br> x+y<br> 2x – 7 = 13<br> 3x + 5y &gt; 9<br> 3x + 5y - 9
Gelneren [198K]
2x -7=13 is an equation because it has an equal sign.
6 0
3 years ago
Identify the terms. (include 20)<br> 3x+5=20
Reika [66]

Answer:

x = 2.5

------------------

Equation:

3 + 5 = 8

Starting:

8x = 20

Conclusion:

x = 2.5

Check:

2.5 * 8 = 20

7 0
3 years ago
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