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Sonbull [250]
2 years ago
12

What is the multiplicative identity of the complex number 4 + 8i

Mathematics
1 answer:
atroni [7]2 years ago
5 0

Answer:

1

Step-by-step explanation:

when you multiply an complex number by its multiplicatuive identity, in case 4+8i, you would multiply both the top and the bottom by 4-8i which is actually the value one since we cannot actually change the whole value of the number. By multiplying it by 1 and we get the same value without the imaginary number

(sorry if this doesn't make sense but I hope it helps)

about that did you forget to put -4 + 8i just to make sure about it because I am not sure if you forget it or not just making sure

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8. In the figure below, ABC is a right triangle, a + b - 135 degrees, and c + d = 55 degrees. Find x.
a_sh-v [17]

Answer:

x=80 degrees

Step-by-step explanation:

We are given that

ABC is a right triangle

Therefore, angle B=90 degrees

Angle A=a+b=135 degrees

Angle C=c+d=55 degrees

Angle D=x

We have to find the value of x.

We know that

In quadrilateral

Sum of all angles of quadrilateral=360 degree

\angle A+\angle B+\angle C+\angle D=360^{\circ}

135+90+55+x=360

280+x=360

x=360-280

x=80

x=80 degrees

5 0
3 years ago
A class meets 42 hours a semester. If each class is 2 1/3 hours long, how many class sessions will there be.
Arte-miy333 [17]

Answer:

Answer will be long decimal but the most amount of classes is 6

42 hrs/2 1/3hrs

Step-by-step explanation:

8 0
3 years ago
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I need help with this question. I didn't choose answer D, but I accidentally did. If you could help me, that would be great.
Alex

Answer:

The correct answer would be B

Step-by-step explanation:

Plz Mark Brainlist

7 0
3 years ago
EASY 5POINT MATH QUESTION PLEASE SOLVE
nika2105 [10]
The equation x = 180 - (31 + 40) can be used. Because the angles are in a straight line ad straight line equals 180 degrees
3 0
3 years ago
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What is the value of y in the product of powers below?
Marat540 [252]

Answer:

y =0

Step-by-step explanation:

From the equation;

8³ × 8⁻⁵×8^y = 8⁻²= 1/8²

From the laws of indices;

aⁿ×aⁿ = a^2n

Therefore;

8³ × 8⁻⁵×8^y = 8^(3+-5+y)

8^(-2+y) = 8^-2 ; but the bases are the same and thus the exponents are the same;

-2 + y = -2

      y = 0

8 0
2 years ago
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