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AfilCa [17]
2 years ago
7

(2 + 3i) + (3 – 4i) (3 – 5i) – (–2 – i) (2 − 4i)(1+ 3i) 2i(−1+ 3i)

Mathematics
1 answer:
grandymaker [24]2 years ago
6 0

Answer:

See below ~

Step-by-step explanation:

<u>Question 1</u>

  • (2 + 3i) + (3 - 4i)
  • <u>5 - i</u>

<u>Question 2</u>

  • (3 – 5i) – (–2 – i)
  • 3 - 5i + 2 + i
  • <u>5 - 4i</u>

<u>Question 3</u>

  • (2 − 4i)(1+ 3i)
  • 2 - 4i + 6i - 12i²
  • <u>14 + 2i</u>

<u>Question 4</u>

  • 2i(-1 + 3i)
  • -2i + 6i²
  • <u>-6 - 2i</u>
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5.63 + 14.37 PLZ ANSWER QUICK
erica [24]
To add decimals, line up the decimal points.
Here are some examples.

1.2
1.43

10.2
 2.5

938.290
   21.001

After you line up the decimal points, just add and carry down the decimal point.

14.37
 5.63
_____
 20.00

So, the answer is 20.
      
5 0
3 years ago
Substitution to solve the linear system
STALIN [3.7K]

y=4x+2. eq1

y=5x. eq2

4x=2-y

x=(2-y) /4

substitute in equation 2

y=5(2-y) /2

y=(10-5y)/2

4y=10-5y

9y=10

y=10/9

substitute in equation 2 or 1

substituting in equation 2

10/9=5x

x=10/45

x=10/45 y=10/9

you can verify it also.

HOPE IT HELPS!!

5 0
4 years ago
At the start of an experiment , there are 30 bacteria dish. The bacteria population is expected to grow at a rate of 180% each d
ehidna [41]
The problem is stated incorrectly.  It should be 7 DAYS and NOT years.

ending amount = beginning amount * (1.8)^days
7 years = 2,555 days
ending amount = 30 * 1.8^7
ending amount = 30 * <span> <span> <span> 61.2220032 </span> </span> </span>
ending amount = <span> <span> <span> 1836.660096 </span> </span> </span> or 1,837 (rounded)
answer is D.


6 0
3 years ago
Please help me, Please answer all 5 questions (please)
Reptile [31]

1.) D.

2.) D.

3.) B.

4.) A.

5.) A.

Hope it helps :)

btw i already answered this :)

4 0
3 years ago
What is the value of x?<br> 40°<br> (6x + 2)
Anvisha [2.4K]

Answer:

x = 8

Step-by-step explanation:

40 + 6x + 2 = 90   {Complementary angles}

Combine like terms

40+ 2 + 6x = 90

     42 +6x = 90         {Subtract 42 form both sides}

             6x = 90 - 42

             6x = 48       {divide both sides by 6}

        6x/6 = 48/6

             x = 8

6 0
4 years ago
Read 2 more answers
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