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kolbaska11 [484]
2 years ago
9

Solve and graph 2cos(2x) = x radians

Mathematics
1 answer:
AleksandrR [38]2 years ago
8 0

The solutions of the equation 2cos(2x) = x are (0.626, 0.626), (-1.607,-1.607) and (-1.798,-1.798)

<h3>How to solve the equation?</h3>

The equation is given as:

2cos(2x) = x

Split the equation as follows:

y = 2cos(2x)

y = x

Next, we plot the graph of y = 2cos(2x) and y = x (see attachment)

From the attached graph, y = 2cos(2x) and y = x intersect at the following points

(x, y) = (0.626, 0.626), (-1.607,-1.607) and (-1.798,-1.798)

Hence, the solutions of the equation 2cos(2x) = x are (0.626, 0.626), (-1.607,-1.607) and (-1.798,-1.798)

Read more about trigonometry equations at:

brainly.com/question/8120556

#SPJ1

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Step-by-step explanation:

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raketka [301]

Answer:

The probability is 0.04746

Step-by-step explanation:

Firstly, we calculate the z-score here

Mathematically;

z-score = x-mean/SD/√n

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Plugging these values into the equation, we have;

Z = (85-90)/15/√25 = -5/15/5 = -1.67

So the probability we want to calculate is ;

P(z > -1.67)

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4 0
3 years ago
How do you write 100 s a fraction, mixed number, or whole number
disa [49]
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5 0
2 years ago
Casey buys a bracket for. She pays for the bracelet and pays $0.72 in sales tax. The sales tax is 6%. What is the Original price
iren2701 [21]

Answer:

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Step-by-step explanation:

amount of tax = $0.72

percent of tax= 6%

Let the original cost be x

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divide both sides by 0.06

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3 years ago
12x+15y=-45 put into slope-intercept form, simplify all fractions.
Karo-lina-s [1.5K]

Answer:

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