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const2013 [10]
2 years ago
9

Sin^2 a/2 - sin a/2 + 1/4 = 0​

Mathematics
1 answer:
zimovet [89]2 years ago
3 0

Answer:

<u>a = 60° or π/3</u>

Step-by-step explanation:

<u>Given :-</u>

sin² a/2 - sin a/2 + 1/4

<u>To find :-</u>

a

<u>Solving :-</u>

sin² a/2 - sin a/2 + 1/4 = (sin a/2 - 1/2)² = 0

sin a/2 - 1/2 = 0

sin a/2 = 1/2

a/2 = 30°

<u>Solution :-</u>

<u>a = 60° or π/3</u>

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a farmer has 10 acres to plant in wheat and rye. He has to plant at least 7 acres. However, he has only $1200 to spend and each
Jobisdone [24]

Answer:

4 acres of wheat and 4 acres of rye.

Step-by-step explanation:

Given: Farmer has only 7 acre, he has plant at least 7 acres.

          Farmer has only $1200 to spend.

          Each acre of wheat will cost $200 and rye will cost $100.

          Planting time is only 12 hours

          Wheat planting take 1 hour per hour and rye take 2 hours per acre.

          Profit on wheat is $500 per acre and rye $300 per acre.

As to find out maximum profit, we need to plant maximum wheat.

While dividing number of acres of land for wheat and rye for plantation, we need to keep two constraint in the mind; Constraint of cost and time as given.

Lets assume few number considering these constraint to get maximum profit.

First assumption, 5 acres of wheat and 2 acres of rye

Time taken= 5\times 1= 5 h\\2\times 2= 2 h

Total time taken 7 hours

Amount spent= 5\times 200= \$ 1000\\2\times 100= \$ 200

Total cost is $ 1200.

Profit= 5\times 500= \$ 2500\\2\times 300= \$ 600

Maximum profit= $3100.

Second assumption, 4 acres of wheat and 4 acres of rye.

Times taken= 4\times 1= 4 h\\4\times 2= 8 h

Total time taken is 12 hours

Amount spent= 4\times 200= \$ 800\\4\times 100= \$ 400

Total cost is $1200.

Profit= 4\times 500= \$ 2000\\4\times 300= \$ 1200

Maximum profit= $3200.

∴ By using hit and trail method, we can see that we are getting maximum profit when farmer is planting 4 acres of wheat and 4 acres of rye.                

8 0
2 years ago
The complex numbers corresponding to the endpoints of one diagonal of a square drawn on a complex plane are 1 + 2i and -2 – i.
kodGreya [7K]
Technically the endpoints will be intersection of first endpoint between x=1 and y=-1second endpoint between x=-2 and y=2
so they are 1-i and -2+2i


7 0
3 years ago
Divide.<br><br> 456 ÷ 7<br><br><br> 64 R 1<br><br> 64 R 2<br><br> 65 R 1<br><br> 65 R 2
umka2103 [35]

Answer:

456/7 equal to (drum rolls) 65.1428571429

Step-by-step explanation:

8 0
3 years ago
Help me plzzzz!! It is math and I have to walk the number line. And i don't know how to do it!
bazaltina [42]

Answer:

1 is 13

2 is 13

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Step-by-step explanation:

8 0
2 years ago
What is the soulition for 2/3x+16=-14
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Answer:

x = - 1/45.

Step-by-step explanation:

7 0
2 years ago
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