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kobusy [5.1K]
3 years ago
7

What are equivalent ratios to 1:4

Mathematics
2 answers:
xeze [42]3 years ago
6 0

Answer:2:8 , 3:12, 4:16, 5:20

Step-by-step explanation:

Olegator [25]3 years ago
3 0

Answer:

2:8

4:16

8:36

12:72

and more

Step-by-step explanation:

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Use the graph of y=sin2θ to find the value of sin 2θ for θ= pi/4 radians
aivan3 [116]
The graph of sin function is a curve as shown below:

Now, Sin 2Ф , where Ф = \frac{ \pi } {4}

or sin 2Ф = 2 × \frac{ \pi } {4} 

or sin 2Ф = \frac{ \pi } {2} 

Ans, sin π/2 = sin 180/2 = sin 90 = 1

Thus, the curve has maximum at 90. 

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3 years ago
Plz help ill give you brainlist plz
vekshin1
Simple you get the area of the inner rectangle, then the area of the 2 semi circles then add them.
First, you need to notice that the diameter of each circle is same as the side of the rectangle (46m), also not that the 2 semi circles will make a complete one circle with radius (46/2)
so now we are left with the area of the rectangle+the area of a circle with radius of 32m
The total area= (46*92)+(3.14*(32^2))= 7447.36m^2
and to keep you significant figures the answer is rounded to 3 digits, so the final answer will be 745m^2.
Hope this helps, thanks.
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