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joja [24]
3 years ago
12

Find the values of x and y. x + 7i = y − yi

Mathematics
2 answers:
Ahat [919]3 years ago
7 0

Answer:

x=y-yi-7i

y=<u>ix+x-7+7i</u>

<u>         2      </u>

Step-by-step explanation:

lys-0071 [83]3 years ago
6 0

Answer: X = y - yi - 7i

               Y = (x + 7i)/(1 - i)

Step-by-step explanation: for the case of (X) you only need to pass the 7i to the other side with the subtraction sign (-7i), then we get this equation:

x + 7i = y − yi

X = y - yi - 7i

in the case of the (Y), first we select the common multiple.

y - yi = y(1 - i)

if we replace it in the original expression, we get the following equation:

x + 7i = y(1 - i)

after that you can pass the value (1 - i) to the other side dividing,

Y = (x + 7i)/(1 - i)

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6 0
3 years ago
Factor polynomial -3x^2-16x-5
forsale [732]

Answer:

-(3x^2 + 16x + 5)

-(3x+1)(x+5)

Step-by-step explanation:

-1(3x^2+15x+x+5)

-1(3x^2+16x+5)

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8 0
3 years ago
How do I solve this?
ozzi
The answer is A) √3
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4 0
3 years ago
Read 2 more answers
Suppose xy=4 and dy/dt=-2. Find dx/dt when x=-3
nirvana33 [79]
Dy/dx = dy/dt  *   dt/dx

xy = 4

y + x(dy/dx) = 0      by implicit differentiation. 

x(dy/dx) = -y

dy/dx = -y/x

<span>dy/dx = dy/dt  *   dt/dx             dy/dt = -2
</span>
<span>-y/x = -2 *   dt/dx
</span>
y/(2x) = dt/dx

dt/dx =  y/(2x)

dx/dt = 2x/y
  
When x = -3,   xy = 4,  y = 4/x = 4/-3 = -4/3

dx/dt = 2*-3/(-4/3) = -6 *-3/4 = 18/4 = 9/2 = 4.5

dx/dt = 4.5
3 0
3 years ago
Read 2 more answers
What does 10^2-2(10+5) equal
Nookie1986 [14]

Answer:70

Step-by-step explanation:

10^2 =100

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100-30= 70

4 0
3 years ago
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