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Savatey [412]
3 years ago
7

What is the lim of (((1/x)-(1/2))/x-2) , as x approaches 2

Mathematics
1 answer:
Katyanochek1 [597]3 years ago
8 0
I assume the denominator is x-2.

\lim_{x\to2}\dfrac{\dfrac{1}{x}-\dfrac{1}{2}}{x-2}=\\
\lim_{x\to2}\dfrac{\dfrac{2}{2x}-\dfrac{x}{2x}}{x-2}=\\
\lim_{x\to2}\dfrac{\dfrac{2-x}{2x}}{x-2}=\\
\lim_{x\to2}\dfrac{2-x}{2x(x-2)}}=\\
\lim_{x\to2}-\dfrac{x-2}{2x(x-2)}}=\\
\lim_{x\to2}-\dfrac{1}{2x}}=\\
-\dfrac{1}{2\cdot2}=\\
-\dfrac{1}{4}=

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Solve l-20l - l7l PLEASE HELPP IM ON A TEST
tiny-mole [99]

Answer:

13

Step-by-step explanation:

|-20| = 20 (anything with | | is absolute value, which is always positive), |7| = 7, 20 - 7 = 13.

quick tip: when you see something like -|#|, that would be negative, but if you saw |-#|, it would be positive.

hope it helps lol

7 0
3 years ago
Hiii can someone pls pls pls help asap
AlekseyPX

Answer:

k = 3.5

Step-by-step explanation:

You need to divide all the numbers.

21/6 = 3.5

24.5/7 = 3.5

28/8 = 3.5

31.5/9 = 3.5

So, the answer is 3.5.

8 0
2 years ago
If triangle ABC is reflected across the y-axis, what are the coordinates
mr Goodwill [35]
<h3>Answer: Second choice.  (-5,4)</h3>

Point A is located at (5,4)

To reflect over the y axis, we flip the sign of the x coordinate while keeping the y coordinate the same. The rule is (x,y) \to (-x,y)

So we will have (5,4) \to (-5,4) as the location of A'

6 0
3 years ago
The graphs below have the same shape. What is the equation of the red<br> graph?
VARVARA [1.3K]

Answer:

G(x) = x^{3} -1

Step-by-step explanation:

The red graph is the blue graph translated 1 unit down, so the answer is A.

5 0
2 years ago
The general form of the equation of a circle is x2 + y2 + 42x + 38y − 47 = 0. The equation of this circle in standard form is A)
jolli1 [7]
The common way of transforming the general form to the standard form is by using the completing the square method. But there is also a neat shortcut to knowing the h, k and r values right away.
The general formula is: 
x²+y²+Dx+Ey+F = 0
x² + y² + (-2h)x + (-2k)y + (h²+k²-r²) = 0

Solving for h:
-2h = 42
h = -21

Solving for k:
-2k = 38
k = -19

Solving for r:
-47 = (-21)² + (-19)² - r²
r = √849

Standard form of given circle is:
(x+21)² + (y+19)² = 849

Answers:
1) B
2) B
3) B
4) D
4 0
3 years ago
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