3 years ago

When 3+4i2+i is expressed in the form a+bi, what is the value of a?

1 answer:

7 0

Multiplying and dividing with conjugate of 2+i in the given expression, we get(3+ 4i)(2-i)/(2+i)(2-i)=(6-3i+8i-4i^2)/(4-i^2)=(10+5i)/(4+1)=(10+5i)/5=2+i=a+bi<span>Thus a=2</span>

You might be interested in

What is the value of A?

beks73 [17]

Answer:

a = 156

Step-by-step explanation:

24 and a form a straight line so they add to 180 degrees

24 +a = 180

Subtract 24 from each side

24+a-24 = 180-24

a = 156

7 0

3 years ago

An arrow is shot vertically upward from a platform 25ft high at a rate of 172⁢ft/sec. When will the arrow hit the ground?

oksian1 [2.3K]

Hello,

<span> h= -16t^2+185t+10, h = 0 when it hits the ground
16t^2+185t+10 = 0
t = 11.6sec (to nearest tenth)

Hope this helps</span>

6 0

3 years ago

In circle K, what is the value of x

Bingel [31]

X=15,

I just took the quiz

8 0

3 years ago

( 1 1/3 + 5/6) divided by 1/6

PSYCHO15rus [73]

Answer:

Step-by-step explanation:

Mark me brainliest plz

5 0

3 years ago

Read 2 more answers

Sue set up a lemonade stand and sold 10 glasses of lemonade in the first hour. Her sales increased at the rate of 20% per hour f

KengaRu [80]

The appropriate exponential function for the first question is

... A: f(n) = 10 × 1.2^n

To find the revenue from sales of that many glasses, we multiply by the sale price to get

... B: 0.5(10 × 1.2^n)

4 0

3 years ago