3 years ago

How do i convert (-∞,∞) to inequality notation. I am being told -∞

Mathematics

1 answer:

iris [78.8K]3 years ago

5 0

Answer:

-inf<x<inf

Step-by-step explanation:

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2) (6x+5)+(-5+3)

GaryK [48]

Answer:

6x + 3

Step-by-step explanation:

6x + 5 - 5 + 3

6x + 3

5 0

3 years ago

Y= -3/4x + 9<br> please help me with my homework

Inga [223]

X=12
Substitute y with 0
Multiply both sides
0=-3/4x+9
0=-3x+36
3x=36
Divide by 3
It’s 12

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3 years ago

Sin A tan A/ 1 - cos A = 1+ sec A

aalyn [17]

$\text{L.H.S}\\\\=\dfrac{\sin A \tan A}{1- \cos A}\\\\\\=\dfrac{\sin A \cdot \tfrac{\sin A}{\cos A} }{ 1- \cos A}~~~~~~~~~~~~~~~~~~~~~~~~~~~~~;\left[\tan A = \dfrac{\sin A }{\cos A}\right]\\\\\\=\dfrac{\tfrac{\sin^2 A}{ \cos A}}{1- \cos A}\\\\\\=\dfrac{\sin^2 A}{\cos A(1-\cos A)}\\\\\\=\dfrac{1-\cos^2 A}{\cos A( 1- \cos A)}~~~~~~~~~~~~~~~~~~~~~~~~;[\sin^2 A + \cos^2 A = 1]\\\\\\$

$=\dfrac{(1+ \cos A)(1 - \cos A)}{\cos A(1 - \cos A)}\\\\\\=\dfrac{1+ \cos A}{ \cos A}\\\\\\=\dfrac{1}{\cos A} + \dfrac{\cos A}{ \cos A}\\\\\\=\sec A + 1 \\\\\\=1+ \sec A\\\\\\=\text{R.H.S}\\\\\text{Proved.}$

8 0

2 years ago

Plzzz help me with 92 don’t understand plz explain

Oksi-84 [34.3K]

Distribute

72+-8p=192

Subtract 72 from each side

-8p=120

Divide each side by -8

And you get -15

3 0

3 years ago

Read 2 more answers

Estimate the length of one side of a square floor if the area is 320 square feet. Round to the nearest whole number.

igomit [66]

So if the area of a square is 320 square meters, then because all four sides are equal, you would end up with the equation $x^{2}=320$ which simplifies to

5 0

3 years ago