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-Dominant- [34]
3 years ago
15

What are the solution(s) of X2-4=0?

Mathematics
1 answer:
irinina [24]3 years ago
6 0

Answer:

-2 or 2

Step-by-step explanation:

So we have the equation:

x^2-4=0

Add 4 to both sides:

x^2=4

Take the square root of both sides:

x=\pm 2

Therefore, our answers are -2 or 2.

And we're done :)

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1.24 % college graduate
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4 years ago
Please help I don't understand!
levacccp [35]

Answer:

9

Step-by-step explanation:

Take the sides in proportion.

⇒ \frac{AE}{AD} =\frac{AB}{AC}

⇒ \frac{12}{12+8} =\frac{x}{15}

⇒ \frac{12}{20} =\frac{x}{15}

⇒ \frac{3}{5} =\frac{x}{15}

⇒ 3 = \frac{x}{3}

⇒ x = 3 × 3

⇒ x = 9

3 0
2 years ago
Which graph represents the function f(x)=4 / x
REY [17]

Answer: The graph of rectangular hyperbola represents the function f(x)=4/x.

Explanation: given function, f(x)= 4/x.

The above function shows equation of rectangular hyperbola or equilateral hyberbola.(because, it is the type of xy=c^2.)

Thus, the asymptote  of the given function must be perpendicular.

Moreover, if x=2, y=2, if x=-2, y=-2

                 If x=4, y=1, if x=-4, y=-1

Therefore, this hyperbola is passing through points (2,2), (-2,-2), (4,1) and (-4,-1).


7 0
4 years ago
Read 2 more answers
A complex shape with measurements 3 feet, 11 feet, 3 feet, 4 feet, 6 feet, 3 feet, 6 feet, 4 feet. What is the perimeter of the
Anna71 [15]

Answer:

Solution given:

perimeter=sum of all side =3 feet+ 11 feet+ 3 feet+ 4 feet+ 6 feet+ 3 feet+ 6 feet+4 feet

=40feet

is your answer

6 0
3 years ago
I need help with this.
Sloan [31]

9514 1404 393

Answer:

  61.4

Step-by-step explanation:

The length of two semicircles of diameter 10 is the circumference of a circle of that diameter:

  C = πd = 10π ≈ 31.4

The perimeter includes that length plus the lengths of two straight sides that are 15 units each.

  P = 31.4 + 2×15

  P = 61.4 . . . . units

4 0
3 years ago
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