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nikklg [1K]
3 years ago
15

Please help please please

Mathematics
1 answer:
Ksju [112]3 years ago
6 0
Omg I have the same problem for my vacation homework
I STILL cant figure it out!
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2 sin^2 + sin x - 3 = 0
denpristay [2]

Answer:

x = 2 π n_1 + π/2 for n_1 element Z

or x = π + sin^(-1)(3/2) + 2 π n_2 for n_2 element Z or x = 2 π n_3 - sin^(-1)(3/2) for n_3 element Z

Step-by-step explanation:

Solve for x:

-3 + sin(x) + 2 sin^2(x) = 0

The left hand side factors into a product with two terms:

(sin(x) - 1) (2 sin(x) + 3) = 0

Split into two equations:

sin(x) - 1 = 0 or 2 sin(x) + 3 = 0

Add 1 to both sides:

sin(x) = 1 or 2 sin(x) + 3 = 0

Take the inverse sine of both sides:

x = 2 π n_1 + π/2 for n_1 element Z

or 2 sin(x) + 3 = 0

Subtract 3 from both sides:

x = 2 π n_1 + π/2 for n_1 element Z

or 2 sin(x) = -3

Divide both sides by 2:

x = 2 π n_1 + π/2 for n_1 element Z

or sin(x) = -3/2

Take the inverse sine of both sides:

Answer:  x = 2 π n_1 + π/2 for n_1 element Z

or x = π + sin^(-1)(3/2) + 2 π n_2 for n_2 element Z or x = 2 π n_3 - sin^(-1)(3/2) for n_3 element Z

3 0
3 years ago
Find the elapsed time for a person who worked from:
Sophie [7]

Answer:

11. 9hrs

12. 5hrs 35min

13. 3hrs 48 min

Step-by-step explanation:

Makes it a bit easier if you convert to 24 hr time.

11. 10 - 19 is 9hrs

12. 545-1120 is 11-5 20-45 -> 6hrs -25min -> 5hrs 35min

13. 1800 - 2148 is 21-18 48-00 -> 3hrs 48 min

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What is the Scientific Notation of 8,599,000,000
AnnyKZ [126]

Answer:

8.599*10^x

Step-by-step explanation:

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A baseball analyst wants to determine the average speed of a fastball thrown in the major league this season. He chooses a week
umka21 [38]

Answer:

he negative real number is -0.70.

Step-by-step explanation:

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A triangle has sides with lengths of 5 kilometers, 12 kilometers, and 13 kilometers. Is it a
VMariaS [17]

Answer:

yes.

Step-by-step explanation:

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2 years ago
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