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Anton [14]
2 years ago
15

What type of number is 3-77i

Mathematics
1 answer:
makkiz [27]2 years ago
8 0

Answer:

complex number

Step-by-step explanation:

77i is an imaginary number but once you put that 3 in the equation it turns into a complex number bc its more than just the imaginary now

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Yoshi is 5% taller today than she was one year ago. Her current height is 168 cm. How tall was she one year ago
NemiM [27]
155.6 CM
I divided 168 by 100 to find 1% then i got 1.68cm then I times that by 5 to find 5% which was 8.4cm. Finally I subtracted 168 and 8.4 to get 155.6 CM
I hope that helped :)
5 0
3 years ago
Read 2 more answers
14.What is the solution of the system?
Archy [21]

Answer:

14.  x=-2.5,  y = -7

15.  x=28  y = -20

Step-by-step explanation:

14.  Let's solve this system by elimination.  Multiply the first equation by -1.

-1*(4x-y)= -1*(- 3)

-4x +y = 3

Then add this to the second equation.

-4x+y = 3

6x-y= - 8

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

2x   = -5


Divide each side by 2

x = -2.5

We still need to find y

-4x+y =3

-4(-2.5) + y =3

10 +y =3

Subtract 10 from each side.

y = 3-10

y = -7


15.I will again use elimination to solve this system, because using substitution will give me fractions which are harder to work with.   I will elimiate the y variable.  Multiply the first equation by 11

11( 5x+6y)= 11*20

55x+66y = 220

Multiply the second equation by -6

-6(9x+11y)=32*(-6)

-54x-66y = -192


Add the modified equations together.

55x+66y = 220

-54x-66y = -192

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

x = 28

We still need to solve for y

5x+6y = 20

5*28 + 6y =20

140 + 6y = 20

Subtract 140 from each side

6y = -120

Divide by 6

y = -20

3 0
3 years ago
2(a -3) + 4b - 2(a -b -3) + 5<br><br> A. 6b+5<br> B. 8b-2<br> C. 6b-5<br> D. No simplified answer
Bond [772]
Your answer is A. 6b+5
8 0
3 years ago
Read 2 more answers
152 ? 6394÷42 i don't understand how
Natasha2012 [34]

Answer:

Using long devision

Step-by-step explanation:

I believe the answer is B

8 0
3 years ago
Year 10
mylen [45]

Answer:

=3x³+2x²−27x−18

Step-by-step explanation:

(x+3)(x−3)(3x+2)

=((x+3)(x−3))(3x+2)

=((x+3)(x−3))(3x)+((x+3)(x−3))(2)

=3x³−27x+2x²−18

=3x³+2x²−27x−18

6 0
3 years ago
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