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snow_tiger [21]
3 years ago
6

Will mark brainliest for whoever answers correctly

Mathematics
1 answer:
Veronika [31]3 years ago
4 0

Answer:

The answer is 2

Step-by-step explanation:

x+y = (1+i) + (1-i)

open the bracket...

1+i + 1-i

collect like terms

=1+1+i-i

= 2-0

=2

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Write a rule to describe this transformation
ehidna [41]

Answer:

is b

Step-by-step explanation: because x-4y

5 0
3 years ago
X | f(x)
katovenus [111]

Answer:

Option B.

Step-by-step explanation:

If the value of function is 0 at x=c, then c is a root or zero of the function. It means the graph of function intersect x-axis at its zeroes.

From the given table it is clear that the value of function are

x  |  f(x) | Sign

2.0 |  2.8  | Positive  

2.5 |  1.1    | Positive

3.0 | –0.8 | Negative

3.5 | –1.2  | Negative

4.0 | –0.3 | Negative

4.5 |  0.7  | Positive

The sign of values of function changes in interval 2.5-3.0 and 4.0-4.5.

It means, the graph of function must intersect x-axis in interval 2.5-3.0 and 4.0-4.5. So, the zeros of the function lie between 2.5 and 3.0 and between 4.0 and 4.5.

Therefore, the correct option is B.

5 0
4 years ago
If the roots of a quadratic equation are real,irrational,and unequal,the discriminant could have a value of
o-na [289]

Answer:

8

Step-by-step explanation:

The condition for the discriminant b² - 4ac is

If b² - 4ac > 0 then roots are real, irrational and unequal

If b² - 4ac > 0 and a perfect square, roots are real, rational and unequal.

Thus

b² - 4ac = 8

5 0
4 years ago
Read 2 more answers
Area of a Triangle
jek_recluse [69]

Answer:

3.51 (round to the nearest hundreds)

Step-by-step explanation:

PART A

slope of the line passing through AC : (6-1)/(1-2) = 5/-1 = -5

equation of the line passing through B and perpendicular to AC:

y-3 = 1/5(x-3)

y-3 = 1/5x -3/5

y = 1/5 x - 3/5 + 3

y = 1/5 x + (-3+15)/5

y = 1/5 x + 12/5

PART B

line that passes through the points A and C

y-1 = -5(x-2)

y = -5x+10 + 1

y = -5x + 11

Interception of the lines

y = 1/5x + 12/5

y = -5x + 11

-5x + 11 = 1/5x + 12/5

-25x +55 = x + 12

26x = 43

x = 43/26

y = -5(43/26) + 11

y= -215/26 + 11

y = (-215+286)/26 = 71/26

D (1.65, 2.73)

PART C

AC = \sqrt{(1-2)^2 + (6-1)^2} = \sqrt{1 + 25} = \sqrt{26} = 5,09902

BD = \sqrt{(3-1.65)^2 + (3-2.73)^2} = 1,376735

PART D

AREA = (5,09902 * 1.376735)/2 = 3,509999

8 0
3 years ago
Plz help me with this plz a thx, but actually know what your doing
Jobisdone [24]

Answer:

DB

Step-by-step explanation:

Basically, the radius is the measure of the distance from the center to any point on a circle. Hence the answer, DB.

6 0
3 years ago
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