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Damm [24]
3 years ago
13

Which expression is a fourth root of -1+i√3?

Mathematics
1 answer:
maw [93]3 years ago
6 0
The fourth power of each proposal has an argument (angle multiplied by 4) :
A. 320*4 = 1280° = 3*360 + 200° is NOT suitable : NO
C. 60*4 = 240° is NOT suitable : NO
D. 280*4 = 1120° = 3*360 + 40° is NOT suitable : NO
and finally :
B. 30*4 = 120° is suitable : YES : ONLY suitable answer
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What are the solutions of 12-x^2 =0
tatiyna

Answer:

x=\pm 2\sqrt{3}

Step-by-step explanation:

observe

12-x^2=0\\x^2=12\\x=\pm \sqrt{12}

4 0
4 years ago
FIND Y INTERCEPT OF THE LINE ON THE GRAPH.
bekas [8.4K]

Answer:

the y-intercept is -1, or (0, -1)

Step-by-step explanation:

Identify the coordinates of the point where the line crosses the y-axis. They are (0, -1), and so the y-intercept is -1, or (0, -1).

7 0
4 years ago
Mr.Johnson purchased 20 concert tickets for a total of $225. The concert tickets cost $15 for adults and $10 for children under
taurus [48]

Answer:

15

Step-by-step explanation:

Let the number of adult tickets be x while children ticket be y. Since the total tickets were 20 then we can form the equation

x+y=20

Making x the subject then x=20-y

Considering the cost of each ticket

15x+10y=225

Substituting x with 20-y then

15(20-y)+10y=225

300-15y+10y=225

Collecting like terms

300-225=15y-10y

75=5y

Y=75/5=15

To find x, we already know that x=20-y hence x=20-15=5

Therefore, children tickets are 15 while adult tickets are 5.

The question only needs us to know the children tickets, y which is 15

3 0
3 years ago
Read 2 more answers
The circumference of the following circle is 18 inches.
horrorfan [7]
The arc length in degrees is 53 degrees
 to find the legth find the fraction of the circle the arc is, this would be 53/360

multiply that by the circumference to find the length:

53/360 * 18 = (53*18) / 360 = 954 / 360 = 2.65 inches

4 0
4 years ago
Use matrices to write the equation of the function in the form y = mx + b that contains the points
Fofino [41]

The line has a slope of -6 and a y intercept of 7.

The linear equation is given by:

y = mx + b;

where m is the slope of the line, b is the y intercept, y, x are variables.

The equation of the line passing through the points (6.-29) and (-4,31) is:

y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)\\\\y-(-29)=\frac{31-(-29)}{-4-6}(x-6)\\\\y+29=-6(x-6)\\\\y=-6x+7

Hence the line has a slope of -6 and a y intercept of 7.

Find out more at: brainly.com/question/13911928

3 0
3 years ago
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