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ziro4ka [17]
3 years ago
7

(3-5i)(2+9i)+(7+2i)(7-2i)

Mathematics
1 answer:
kondor19780726 [428]3 years ago
7 0
i^{2} = -1

-----------------------------------------

(3-5i)(2+9i)+(7+2i)(7-2i) = \\  \\  =  6 + 27i - 10i - 45i^{2} + 49 - 14i + 14i - 4i^{2} =  \\  \\  =55 + 17i + 45 + 4   = \boxed{104 + 17i}
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A basketball player made 36 free throws in 16 games. Find the ratio of free throws to games.
andriy [413]
Any ratio simply takes the form (A/B)

Let throws = T , games = G

T = 36

G = 16

ratio of free throw to game = T/G

T/G = 36/16 = 9/4

8 0
4 years ago
Read 2 more answers
Suppose the average yearly salary of an individual whose final degree is master's is $40 thousand less than twice that of an ind
Lostsunrise [7]

Answer:

<h2>x=50000  dollars ( the average salary of bachelor degree)</h2><h2>the average salary of Masters degree = 2x-40000</h2><h2>2(50000)-40000=60000 dollars</h2><h2></h2><h2>step by step explanation :</h2>

let x be the salary of individual with bachelor degree

Then the average salary of individual with Masters degree is:

(2x-40000)

the combined of two salaries is 110000:

x+(2x-40000)=110000

3x-40000=110000

3x=110000+40000

x=150000/3

<h2>x=50000  dollars ( the average salary of bachelor degree)</h2><h2>the average salary of Masters degree = 2x-40000</h2><h2>2(50000)-40000=60000 dollars</h2>

7 0
3 years ago
If three sides of one triangle are equal to three sides of another triangle, then the triangles are congruent. conjunction disju
Mama L [17]
All statements are conditional since they are the given statements that are considered to be true. 

<span>Conjunction and disjunction are not true since... </span>

<span>→Conjunction: There is no implication of the uses of "and" </span>
<span>→Disjunction: There is no implication of the uses of "or" </span>

<span>Good luck!</span>
4 0
4 years ago
1 2/9 x 1 4/5 please quick I have 5 minutes
Sergeeva-Olga [200]

Answer:

2 &1/5

Step-by-step explanation:

there u go good luck with whatever ua re doing

6 0
3 years ago
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tell whether this has one solution, infinitely many solutions, or no solution. Explain your reasoning. y=2x+7, y=3x-1
hammer [34]

Answer:

One solution

Step-by-step explanation:

They have isolated y for you in both equations so you can plug either one into the other.

y = 3x - 1

2x + 7 = 3x - 1

isolate the x

7 = x - 1

x = 8

Go back to the original and plug 8 into x to get y.

y = 2 (8) + 7

y = 16 + 7

y = 23

This means at (8, 23) y = 2x+7 is equal to y = 3x-1. In other words they share a point at (8, 23). This is the only solution because for any other x and y they'd not be equal.

8 0
3 years ago
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