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nata0808 [166]
3 years ago
6

Interval is 0, 2pi) 4 sin^2x-4 sin x + 1 = 0

Mathematics
1 answer:
svetoff [14.1K]3 years ago
8 0

Answer:

\large\boxed{x=\dfrac{\pi}{6}\ \vee\ x=\dfrac{5\pi}{6}}

Step-by-step explanation:

4\sin^2x-4\sin x+1=0\\\\2^2\sin^2x-2(2\sin x)(1)+1^2=0\\\\(2\sin x)^2-2(2\sin x)(1)+1^2=0\qquad\text{use}\ (a-b)^2=a^2-2ab+b^2\\\\(2\sin x-1)^2=0\iff2\ain x-1=0\qquad\text{add 1 to both sides}\\\\2\sin x=1\qquad\text{divide both sides by 2}\\\\\sin x=\dfrac{1}{2}\to x=\dfrac{\pi}{6}\ \vee\ x=\dfrac{5\pi}{6}

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DiKsa [7]
FIND LOT AREA:
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A= 18 feet * 45 feet
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1 yard= 3 feet

Divide number of square feet by number of feet per yard.
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FIND PRICE OF SOD:
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ANSWER: Cindy will pay $3,240 to cover the lot with sod.

Hope this helps! :)
3 0
3 years ago
Write the point-slope form of the equation of the horizontal line that passes through the point (2, 1). Pease show how!
mote1985 [20]
Check the picture below.

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&x_1&y_1&x_2&y_2\\
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% slope  = m
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5 0
2 years ago
The expression below represents the distance between two points on a number line.
Mrrafil [7]

Answer:

A

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|-5 - 4|

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3 0
3 years ago
A rectangle's length is three times its width. Let w denote the rectangle's width. What polynomial represents the rectangle's ar
Ket [755]
<span>A = l x w
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Substitute the l with 3w
The formula will be

A = 3w + w
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An example:
The given known values are: Length of 4 cm Width is unknown Perimeter is 34 cm Find the dimensions of the rectangle.   Since the geometric formula for perimeter is: </span>
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7 0
2 years ago
Can someone please. Heck my answer if it’s wrong please answer it correctly and please show work first pic is the question and 2
PIT_PIT [208]

Answer:

Correct

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(1y = just y) So the constant of proportionality can be written as y = 0.75x

All of your explanations and descriptions are accurate.

8 0
3 years ago
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