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Olin [163]
3 years ago
13

Multiplying complex number I need help on 7 & 8

Mathematics
1 answer:
Alexxandr [17]3 years ago
3 0

Answer:

7.  35i^2 - 46i + 15

8. -15i^2-i -40

Step-by-step explanation:

hope this helps. :)

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25 children are standing in a line to play a game. they are given numbers 1 to 25 to identify themselves. then, every 4th child
MrRa [10]

Children who came forward are numbered 4, 8, 12, 16, 20, 24 i.e. multiples of 4 ≤25  

Given that 25 kids are waiting in line to play a game. They are assigned numbers ranging from 1 to 25 to identify themselves. Then, every fourth child in line is asked to step forward.

Every fourth child in the line is asked to step forward

then, 4th child,8th child,12th child,16th child,20th child,24 child will come forward as if 4,8,12,16,20,24 are the numbers which are multiples of 4 ≤25

Children who came forward are numbered 4, 8, 12, 16, 20, 24 i.e. multiples of 4 ≤25

Learn more about numbers here:

brainly.com/question/17429689

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8 0
1 year ago
How long will it take 680 dollars to earn 102 dollars in simple interest at an annual interest rate of 3%? Show your work in an
jenyasd209 [6]
Simple interest is where 3% of the original value is added on each year

goal number = $102

original number = $680
3% of $680 can be found by getting 1% and multiplying by 3
100% = original number = $680
100% / 100 = 1% so $680 / 100 = $6.80 = 1%
3% = $6.80 * 3 = $20.40

so each year the money rises by $20.40

to find out how many years it would take to get to $102:
$102 / $20.40 = 5 years


5 0
3 years ago
The height of each story of an office building is 9 3/4 feet. The height is measured from the ceiling to the floor. The building
lesya692 [45]

Answer:

The correct answer is A) -19 1/2

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
PLEASE ANSWER THIS FAST Will the red square and the orange square always equal the blue square? What colored square is the hypot
Vikentia [17]

Step-by-step explanation:

  • The area of the blue square will always equal the sum of the area of the orange and red rectangles

The pythagorian theorem:

a²+b² = c²

now let a be the side of the red triangle and b the side of the orange one

so a² is the area of the red triangle and b² is the area of the orange one

Let c be the side of the blue rectangle

so c² is the area of it

then what we concluded is right

  • the hypotenuse is the blue side since it is the larger one
6 0
3 years ago
Why is 1/3 bigger than 4/5
UkoKoshka [18]
1/3 is in fact NOT larger than 4/5. 4/5 is larger than 1/3.
4 0
3 years ago
Read 2 more answers
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