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Mekhanik [1.2K]
2 years ago
11

If Sin x = -¼, where π < x < 3π∕2 , find the value of Cos 2x

Mathematics
1 answer:
Sliva [168]2 years ago
5 0

Answer: 7/8

Cos2x has 3 formulas, Sinx is given in the question, we should use the formula with sinus. I guess that's the solution.

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Find the area of a circle with radius, r = 60cm. Give your answer rounded to 3 SF.
katrin [286]

The area of the circle will be equal to 11309.733 square centimetres.

<h3>What is an area?</h3>

The space occupied by any two-dimensional figure in a plane is called the area. The space occupied by the circle in a two-dimensional plane is called the area of the circle.

The area of the circle will be calculated by the following formula:-

Area = πr²

Area = π x ( 60 x 60 )

Area = 3.14 x 60 x 60

Area = 11309.733 square centimeters.

Therefore the area of the circle will be equal to 11309.733 square centimetres.

To know more about an area follow

brainly.com/question/25292087

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5 0
2 years ago
What is 76-183+56-1,543 (15 points)
WITCHER [35]
Use Pemdas
<span>76-183+56-1,543
</span><span>-107+56-1,543
</span><span>-51-1,543
</span>−<span>1594
</span>
−1594<span> is your answer.
</span>
Hoped I helped!
7 0
2 years ago
Read 2 more answers
Simplify (x - y + 1) - (x + y - 1)
andrey2020 [161]
First, distribute the minus sign across the second set. So you have:

x - y + 1 - x - y + 1

Now, we combine like terms:
x-x=0
-y-y=-2y
1+1=2

So we have -2y+2

Hope that helps.
5 0
3 years ago
Please help <br><br> A. 13<br> B. 26<br> C. 40<br> D. 36<br> D. 41
Morgarella [4.7K]
The value of x is 26.
4 0
3 years ago
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What does it mean to talk about the 'volume'of the rectangular box or cylindrical container?<br>​
valkas [14]

Answer:

What does it mean to talk about the ' volume ' of the rectangular box or cylindrical container

---------

It's how much it will hold, in cubic units.

It's a 3-dimensional value.

It's not restricted to rectangular boxes or cylinders

8 0
3 years ago
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