4 years ago

Can somebody please help me ?? :)

Mathematics

1 answer:

sashaice [31]4 years ago

5 0

Answer:

first option

Step-by-step explanation:

Multiplying a complex number by its conjugate gives a real number and thus removes imaginary numbers in the denominator.

If z = a + bi then its conjugate is a - bi and their product

(a + bi)(a - bi) → where a and b are real

= a² + b² ← a real number

You might be interested in

#1 with work please

Elena-2011 [213]

Answer:

-19

Step-by-step explanation:

5v+3w

Let v = -5 and w=2

5(-5) + 3(2)

Multiply first

-25 + 6

The add

-19

7 0

3 years ago

Read 2 more answers

The diameter of a circle is 8 cm. find it's area in terms of pi

nydimaria [60]

Answer:

d=8

r=d/2

r=4

a=πr^2

=22/7×4×4

=50.28

3 0

3 years ago

Read 2 more answers

You realize that more than 8000 gallons per year was a lot of water to waste with a leaky faucet. You fixed your faucet so that

kati45 [8]

So what you do you divide 8000 by 30 and should get 266.6 gallons were wasted

4 0

3 years ago

15 14 18 24 10 55 14 19 Find the mean, median and mode

Charra [1.4K]

Answer:

Mean: 21.125

Median: 16.5

Mode: 14

Step-by-step explanation:

First sourt your numbers from smallest to biggest - very important!

Mean= (all numbers total/amount of numbers)=169/8=21.125

Median= The middle two numbers added and divided by two = 15+18/(2)=16.5

Mode=number that appears most often: 14 appears twice!

5 0

4 years ago

A rectangular patio is 9 ft by 6 ft. When the length and width are increased by the same amount, the area becomes 88 sq ft. Ging

Arte-miy333 [17]

The answer is a (one possible length and one possible width)

8 0

2 years ago