Question

Precalculus @Hero

Answer 1

\[1 - \sin^2 x = 0.5 \cos x\]
\[\cos^2 x = 0.5 \cos x\]
\[(\cos x) (\cos x) = 0.5 \cos x\]
\[\cos x = \frac{ 1 }{ 2 }\]
\[x = \frac{ \pi }{ 3 }\]

Answer 2

These cos^2 x always hide a solution, so I know I'm missing something here.

Answer 3

\(\cos^2x - \dfrac{1}{2}\cos(x) = 0\)
\(\cos(x)\left(\cos(x) - \dfrac{1}{2}\right) = 0\)

Answer 4

I think you might know what to do from there

Answer 5

I keep doing these problems linearly.

Answer 6

Like straight algebra

Answer 7

Yeah, it's best to think of these like quadratic equations. Move everything to the left and set equal to zero.

Answer 8

Technically, if you let \(\cos(x) = x\) then you would have:
\(x^2 = 0.5x\)

If you thought of it that way, you would know to automatically move everything to the left side:
\(x^2 - 0.5x = 0\)
\(x(x - 0.5) = 0\)

Becomes more obvious then.

Answer 9

That's true. I think I'll start converting my trig functions to x since they look easier that way.

Answer 10

Thank you again Hero

Answer 11

Yup, it definitely helps.

Answer 12

Solve x2 u2013 4 = 5 by graphing the related function.

Answer 13

Which statements describe how Antinous is portrayed in this excerpt from Book 21

Answer 14

Let g(x) = 2x and h(x) = x2 + 4.

Evaluate (h u2218 g)(u22122).

Answer 15

The domain for f(x) and g(x) is the set of all real numbers.

Let f(x) = 2x2 + x u2212 3 and g(x) = x u2212 1.

Answer 16

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The domain for f(x) and g(x) is the set of all real numbers.

Let f(x) = 3x + 5 and g(x) = x2.

Answer 17

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Answer 18

Math help

Answer 19

Let g(x) = 2x and h(x) = x2 + 4.

Evaluate (h u2218 g)(1).

Answer 20

The domain for f(x) and g(x) is the set of all real numbers.

Let f(x) = 3x + 5 and g(x) = x2.

Answer 21

The domain for f(x) and g(x) is the set of all real numbers.

Let f(x) = 2x2 + x u2212 3 and g(x) = x + 2.

Answer 22

The domain for f(x) and g(x) is the set of all real numbers.

Let f(x) = 3x + 5 and g(x) = x2.

Answer 23

Math help

Answer 24

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Answer 25

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Answer 26

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Answer 27

PLEASE HELP OML!!!!!!!!!!!
1. H2 + Cl2 u2192 HCl (Need to balance equation)
How many grams of HCl can be produced if 7.

Answer 28

The youth group is going on a trip to the state fair. The trip costs $63. Included in that price is $13 for a concert ticket and the cost of 2 passes, one f

Answer 29

oh hello. :))))

Answer 30

The domain for f(x) and g(x) is the set of all real numbers.

Let f(x) = 3x + 5 and g(x) = x2.

Answer 31

Let f(x) = 2x2 + x u2212 3 and g(x) = x u2212 1.

Find f(x)/g(x) and state its do