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Ronch [10]
3 years ago
13

Multiply and simplify the product. (3 – 5i)(–2 + 4i) Select the product.

Mathematics
2 answers:
Bas_tet [7]3 years ago
8 0

Answer:

14+22i

Step-by-step explanation:

Edge Verified

garri49 [273]3 years ago
6 0

Answer:

-20i^2 + 22i - 6

Step-by-step explanation:

(3 - 5i)(-2 + 4i) = -6 + 10i + 12i - 20i^2 = -20i^2 + 22i - 6

if you want to go further,

-20i^2 + 22i - 6 = -2(10i^2 - 11i + 3)

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Mr. Chen write the expression 4 x (7 - 2^2) divided by 10 on the board. What is the value of the expression?
Sauron [17]

Answer: 120x

Step-by-step explanation:

8 0
3 years ago
Ella swims four times a week at her club's pool. She swims the same number of laps on Monday, Wednesday, and Friday, and 15 laps
ZanzabumX [31]

Answer:

Equation for the problem

3x + 15 = 51 laps

Hence

She swims on

Monday: 12 laps

Wednesday : 12 laps

Friday = 12 laps

Step-by-step explanation:

Ella swims four times a week at her club's pool.

We are told that:

She swims the same number of laps on Monday, Wednesday, and Friday.

Hence, the number rod times that she swims on Monday, Wednesday and Friday is represented by x

Also, she swims 15 laps on Saturday. She swims a total of 51 laps each week. Equation for the problem

= x + x + x + 15 = 51 laps

3x + 15 = 51 laps

Hence

3x = 51 - 15

3x = 36

x = 36/3

x = 12 laps

Therefore, She swims on:

Monday: 12 laps

Wednesday : 12 laps

Friday = 12 laps

5 0
3 years ago
If there is a bag with the numbers 1 2 3 4 and 5 in it and you draw out 3 numbers, without replacing them, how many different co
Bezzdna [24]

Answer:

you can make 3 combinations

5 0
2 years ago
S
erica [24]

<em>Your answer is $350, </em>

<em>35 x 10 = $350. Your gross sum would be $350 if your wages are 10 per hour. </em>

<em></em>

<em>Hope it helps! ~</em>

<em>RealNameXHidden! :)</em>

7 0
4 years ago
A student has homework assignments in each of his five daily classes he estimates that each assignment will take 30 minutes to c
olga_2 [115]

Answer:

he has to start at 8:30 PM I think

Step-by-step explanation:

it's because you do 30*5 then you get the answer 150, then you will do 150/60 whitch will get you to 2.5 and I think 2.5 is 2 hours, and 30 minutes. Then you minius 2 hours, and 30 minutes to the 10 hours and you get 8:30 PM (I don't know if that's correct or not)

6 0
3 years ago
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