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zzz [600]
3 years ago
9

Trig: Use a half angle formula to find the exact value of the expression? cos(5pi/12)

Mathematics
1 answer:
stepladder [879]3 years ago
4 0
I believe that the correct answer would be 0.999739299
5 * 3.14 = 15.7
15.7/12 = 1.308333333
cos(1.308333333)
0.999739299
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farmer joe is enclosing a rectangular area on his arm for his chicken with 200 feet of fencing that he recently acquired in a tr
Llana [10]
For this case, the area is given by:
 A = x * (200-2x)
 Rewriting:
 A = 200x-2x ^ 2
 Deriving the expression we have:
 A '= 200-4x
 Equaling zero we have:
 200-4x = 0
 We clear x:
 4x = 200
 x = 200/4
 x = 50 feet
 Then, the maximum area is:
 A (50) = 50 * (200-2 * 50)
 A (50) = 5000 feet ^ 2
 Answer:
 
the maximum possible area that can be enclosed with his 200ft of fencing is:
 A
 (50) = 5000 feet ^ 2
8 0
3 years ago
3y²z(2y²z + 4yz - y + z) = <br> 6y⁴z² + 12y³z² - 3y³z + 3y²z
lord [1]
18y⁸z²=18y⁸z², you have to simplify it and add like terms to get your answer

3 0
3 years ago
In the figure above, solve for x and y.
Naddik [55]

Answer:

x = 34°

y = 15

Step-by-step explanation:

x + 146 = 180

x = 34°

4y + 8 + 5y + 3 + 34 = 180

9y + 45 = 180

y = 15

5 0
3 years ago
What is the intermediate step in the form (x+a)2 = b as a result of completing the square for the following x^2+16x-145=10x-7
Lorico [155]

Answer:

(x+3)^2=147

Step-by-step explanation:

7 0
3 years ago
Through: (4, -3), perp. to y=-2x + 1
larisa86 [58]

Step-by-step explanation:

y = -2x + 1. => Slope = -2

Then the perpendicular line will have a slope of -1/(-2) = 0.5.

We have y = 0.5x + c.

When x = 4, y = -3.

=> (-3) = 0.5(4) + c, c = -5.

Hence the answer is y = 0.5x - 5. (C)

7 0
3 years ago
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