2 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

Arrange the following in ascending order 1/5 2/3 4/15

BigorU [14]

Step-by-step explanation:

in ascending order;

4/15 ,1/5 ,2/3

5 0

2 years ago

Read 2 more answers

given the equation y-5=5x determine whether the points (2,12) and (-2,-5) are a solution on the graph

Flura [38]

(x,y)
sub points to see if we get true statemtn

(2,12)
x=2 and y=12

12-5=5(2)
7=10
false
no, (2,12) is not a point

(-2,-5)
x=-2
y=-5

-5-5=5(-2)
-10=-10
true
(-2,-5) is a soltuion

(-2,-5) is the only solution given that works

6 0

2 years ago

Coordinate Plane Dilation

andrew11 [14]

Answer:

B. (36, -12)

Step-by-step explanation:

4 0

2 years ago

How does the value of log Subscript 2 Baseline 100 compare with the value of Log Subscript 6 Baseline 20?.

attashe74 [19]

You can use the change of base formula to get

$\log_2(100) = \frac{\log(100)}{\log(2)} \approx 6.643856$

and also

$\log_6(20) = \frac{\log(20)}{\log(6)} \approx 1.671950$

In general, the change of base formula is

$\log_b(x) = \frac{\log(x)}{\log(b)}$

8 0

1 year ago

Can someone help me please?

shusha [124]

So, if the page is 12 inches wide, that's the width of the page, 12, minus the width of the photo, 7 1/2. 12 - 7 1/2 = 4 1/2.
Now, we need to divide 4 1/2 by 2, so it will be even on both sides.
4 1/2 divided by 2 = 2 1/4.
He should put the picture 2 1/4 inches from each side of the page.

8 0

2 years ago

Read 2 more answers