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VMariaS [17]
2 years ago
15

Simplify the expression, sin2x + sinx + cos2x - 1

Mathematics
1 answer:
SSSSS [86.1K]2 years ago
6 0

Answer:

2sinxcosx + sinx +1-2sin²x-1

2sinxcosx+sinx-2sin²x

sinx (2cosx+1-2sinx)

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ii. A machine is sold for 7,000/-. The gross loss is 20% of the cost. What are the cost and gross loss?
aleksley [76]

Given:

Selling price of a machine = 7000/-

Gross loss = 20%.

To find:

The cost and gross loss.

Solution:

Let x be the cost of machine.

According to the question,

x-20\%\text{ of }x=7000

x-\dfrac{20}{100}x=7000

x-0.2x=7000

0.8x=7000

Divide both sides by 0.8.

x=\dfrac{7000}{0.8}

x=8750

So, the cost of the machine is 8750/-.

Now,

\text{Gross Loss}=\text{Cost}-\text{Selling price}

\text{Gross Loss}=8750-7000

\text{Gross Loss}=1750

Therefore, the gross loss is 1750/-.

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2 years ago
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chubhunter [2.5K]

Answer:

9

Step-by-step explanation:

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=9

bingo

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4 0
2 years ago
If we list all the possible factors (in order) of 12, we get 1, 2, 3, 4, 6, 12. This is the case because 1 x 12, 2 x 6, and 3 x
soldi70 [24.7K]

Answer:

1, 2, 3, 5, 6, 10, 15 and 30.

3 0
3 years ago
Theoretically, what would happen if a nation had an unlimited supply of a certain resource?
Stella [2.4K]
There are several ways this could go, this is my theory. This would be very dangerous because if one Nation had an unlimited supply of a certain resource, other Nations would possibly go to war. Also, the Nation would have trouble controlling its citizens, immigration, and power. 
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Which is a graph of a proportional relationship?
hoa [83]

Answer:

bottom left graph

Step-by-step explanation:

A proportional relationship is linear, represented by a straight line graph passing through the origin.

The graph on the bottom left is straight line passing through the origin.

7 0
3 years ago
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