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nirvana33 [79]
3 years ago
11

How do you solve 1. X^2-x+1=0 2. X^2-2x+5=0 In the complex number system ?

Mathematics
1 answer:
Alexxandr [17]3 years ago
8 0
You use the discriminant (b²-sqr(4ac))/2a and if sqr(4ac) inferior to 0 then use i = sqr(-1)
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Whitch of the following options have the same value of 15 % of 20​
Gemiola [76]

Answer:

15% of 20 is 3

Step-by-step explanation:

because 15/100 can be reduced if you divide by 5 which will be 3/20. After you multiply 3/20 by 20/1. So 20*3 is 60 divided by 20 because 20*1 equals 20 you get 3.

6 0
3 years ago
a square window has a perimeter of (8x + 12) feet. Write an expression that represents the side length of the window. (in feet)
Harrizon [31]
8x+12=p so you would take away 12 from p making the equation 8x=p-12 and then divide that by 8 so the equation is x= p-12/8 ( x equals p minus 12 over 8)

7 0
3 years ago
How do you solve 1/3 of 3/4 <br> of a fraction
Trava [24]

1 1/12

The fractions have unlike denominators. First, find the Least Common Denominator and rewrite the fractions with the common denominator.

LCD(1/3, 3/4) = 12

Multiply both the numerator and denominator of each fraction by the number that makes its denominator equal the LCD. This is basically multiplying each fraction by 1.

(13×44)+(34×33)=?

Complete the multiplication and the equation becomes

4/12+9/12=?

The two fractions now have like denominators so you can add the numerators.

Then:

4+9/12=13/12

This fraction cannot be reduced.

The fraction

13/12

is the same as

13÷12

Convert to a mixed number using

long division for 13 ÷ 12 = 1R1, so

1312=1 1/12

Therefore:

13+34=1 11/2

5 0
3 years ago
Marvin has 4 books to read for homework this week if he reads 2/3 of a book each night how many nights will it take him to read
Margarita [4]

Answer:

6 night

PLEASE SAID THANKS

8 0
3 years ago
Read 2 more answers
How to graph y=2x-4 x+3y=9
NikAS [45]
  • Answer:

Step-by-step explanation:

  • The point form: (3,2)
  • You solve for X
  • You solve for y
  • On the Y-axis where the 2 is you go 3 to the right and put your point right there above the 3.
  • There you have your answer on the graph.
4 0
3 years ago
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