If x2 = 30, what is the value of x? A. ±60 B. ±15 C. ±square root of 30 D.±square root of 15

Mathematics

1 answer:

anygoal [31]3 years ago

6 0

Answer:

C. ±square root of 30

Step-by-step explanation:

Apply the square root function to both sides of the equation:

$\sqrt{x^2}=\sqrt{30}\\\\|x|=\sqrt{30}\\\\x=\pm\sqrt{30}$

_____

The absolute value equation has two solutions. They match choice C.

You might be interested in

1. A 42 inch television is 40.6 inches wide. Using the diagram below, determine the

sveticcg [70]

Answer:

184.85 square mm

Step-by-step explanation:

The area of a sector of a circle is , where r is the radius and is the angle in radians subtended by the arc at the centre of the circle.

Since, diameter = 40.6 mm

So, radius(r)=20.3 mm and = radians

So, area of sector=

Step-by-step explanation:

6 0

3 years ago

A system of linear equations has been graphed in the diagram. Determine a reasonable solution for the system of equations.

NeTakaya

Remark

You have to make a couple of assumptions. The first is that the x and y axis are the same unit spacing.
That means that 0,1 and 1,0 are the same distance from the origin and the same would be true for 0,2 and 2,0. The minus points would have to have the same things said about them.
The next assumption is that the solution point is in the third quadrant. It would look something like (- , - )
The last assumption is that x is a larger number than y. x in this case means that x is less negative than y.
Eye balling it tells me that the x value is about 1/4 the y value.

Solution

A reasonable solution would be (-1 , - 4)

7 0

3 years ago

The amount of turn between two straight lines that have a common end point is called __________.

Anton [14]

Answer:

Angle

Step-by-step explanation:

In the image I added you can observe that the common endpoint is called a vertex, and the "turn" or aperture formed between the two straight lines (or arms) that converge in the vertex, is the angle and it can be measured on degrees.

I hope you find this information usefun and interesting! Good luck!