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Georgia [21]
3 years ago
6

Simplify the expression to a + bi form: (-11 - 7i) (2 +6i)

Mathematics
2 answers:
tester [92]3 years ago
5 0

( - 11 - 7i)(2 + 6i) \\  =  - 22 - 66i - 14i - 42 {i}^{2}  \\  =  - 22 - 80i + 42 \\  = 20 - 80i

I hope I helped you^_^

Rainbow [258]3 years ago
4 0

Answer:

20-80i

Step-by-step explanation:

(-11-7i)(2+6i)

-22-14i-66i-42i^2 where i^2=-1

-22-14i-66i-42(-1)

-22-14i-66i+42

-22+42-14i-66i

20-14i-66i

20-80i

Please mark me as Brainliest if you are satisfied with the answer.

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In the equation z/6 =
Nikitich [7]

Hi there!  

»»————- ★ ————-««

I believe your answer is:  

"Isolate the variable  using inverse operations."

»»————- ★ ————-««  

Here’s why:

To solve for a variable, we would have to isolate it on one side.

To isolate it, we would use inverse operations on both sides on the equation until the variable is isolated.

There are no like terms in the given equation.

⸻⸻⸻⸻

\boxed{\text{Solving for 'z'...}}\\\\\frac{z}{6} = 36\\-------------\\\rightarrow (\frac{z}{6})6 = (36)6\\\\\rightarrow  \boxed{z = 216}

⸻⸻⸻⸻

»»————- ★ ————-««  

Hope this helps you. I apologize if it’s incorrect.  

5 0
2 years ago
Read 2 more answers
Alex has a pet snake that eats 1 mouse every week. How many mice will the snake eat if Alex has the snake for 4 years?
Anvisha [2.4K]

Answer:

208.5714

Step-by-step explanation:

how many weeks are in 4 years

3 0
3 years ago
Read 2 more answers
Erin owns $375 worth of comic book. She spends $15 every week on new comic books
padilas [110]
She would have $350 dollars left.
4 0
3 years ago
Help!!! ---- The graph of a function is a line that passes through the points (1,4), (3,8), and (6,y). What is the value of y?
natima [27]

Answer:

y = 14

Step-by-step explanation:

First find the slope of the line. To find the slope of the line, use the slope formula:

m = \frac{y_2-y_1}{x_2-x_1} = \frac{8-4}{3-1} =\frac{4}{2}=2

The slope of the line is 2.

Repeat this same process instead with points (1,4) and (6,y). Substitute m = 2.

2 = \frac{y-4}{6-1} \\\\ 2=\frac{y-4}{5}\\\\ 10=y-4\\\\14b= y

So y = 14.

5 0
3 years ago
A line segment has endpoints at (1,6) and (9,-10). The midpoint of the segment is located​
ira [324]

Answer:

The answer is

<h2>( 5 , - 2 )</h2>

Step-by-step explanation:

The midpoint M of two endpoints of a line segment can be found by using the formula

M = (  \frac{x_1 + x_2}{2} , \:  \frac{y_1 + y_2}{2} ) \\

where

(x1 , y1) and (x2 , y2) are the points

From the question the points are

(1,6) and (9,-10)

The midpoint is

M = ( \frac{1 + 9}{2}  \:  , \:  \frac{6 - 10}{2} ) \\  = ( \frac{10}{2}  \: , \:  -  \frac{4}{2} )

We have the final answer as

<h3>( 5 , - 2)</h3>

Hope this helps you

4 0
3 years ago
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