3 years ago

15 Points!

1 answer:

6 0

$y=arc\sec x\iff x=\sec y\\\\y=arc\sec1\iff1=\sec y\\\\\to\dfrac{1}{\cos y}=1\to\cos y=1\to y=2k\pi;\ k\in\mathbb{Z}$
Answer: C) 0

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Simplify x^2-9 over x^2-3x

Alla [95]

Answer:

$\frac{x+3}{x}$ or x+3/x

Step-by-step explanation:

Using D.O.T.S (difference of two squares) formula :

$a^{2} -b^{2} = (a+b)(a-b)$

$x^{2} -9= (x+3)(x-3)$

Factorise the second bit:

$x^{2} -3x = x(x-3)$

Now write out this fraction:

$\frac{(x+3)(x-3)}{x(x-3)}$

Now we can cancel out repeated terms (x-3):

$\frac{(x+3)}{x}$
This is our final answer:

$\frac{x+3}{x}$

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3 years ago

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Pls help me with this and show the work on how u did it step by step ty

Blababa [14]

1/3 z - 12 = 36

1/3 z - 12 + 12 = 36 + 12

1/3 z = 48

1/3 z = z/3

Then multiply by the denominator, 3 to get 3 on other side of the equation.

3• z/3 = 48 • 3

z = 48 • 3
z = 144.

The solution to your problem is z = 144

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3 years ago

Someone help me please! With 3 and 4

vlada-n [284]

22h=22
So h=1
This answer is the only mistake in the equation

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A) A designer has a circular tablecloth with radius 0.5 m. He wants to sew a fringe around the cloth. The fringe is sold by the

Andrei [34K]

1) 0.5m . 2 = 1 meter
2) 4.70$
3) (r^2) / 2 = 81/2 = 40.5m^2

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Sea H = {(x, y, z, w) : x = y, w = 3y} y sea v = (−1, 2, 3, 1). Encuentre una base para su complemento ortogonal H⊥. Escriba v =

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Answer:

hay una app que se llama photo map es muy buena te va ayudar

Step-by-step explanation:

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3 years ago