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aev [14]
3 years ago
7

Help me pleaseeeeeeee

Mathematics
1 answer:
brilliants [131]3 years ago
8 0
Don’t fall for the bitly it causes a virus be careful please
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Pooky eats three cans of cat food each day. How long will 27 cans of food last?
djverab [1.8K]

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9

Step-by-step explanation:

27/3=9

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M.P=Rs 480, S.P= Rs 456​
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How many different isosceles right triangles can be formed from three dots in the grid below? Two examples are shown.
oksano4ka [1.4K]

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  28

Step-by-step explanation:

The attached figure shows 7 triangles (counting the original 2). Each has degree-4 rotational symmetry about the center of the figure, so there can be 7×4 = 28 triangles.

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2 years ago
Find the sum of the first 5 terms of the sequence 4,2,0
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3 years ago
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XVerify the identity. (7 points) cos 4u = cos22u - sin22u
Alexandra [31]

Answer:

cos 4u = co^s2 2u - sin^2 2u

Step-by-step explanation:

cos 4u = co^s2 2u - sin^2 2u

Let 4u = 2x

cos 2x = cos^2 x - sin^ 2 x

cos (x+x) = cos^2 x - sin^ 2 x

Using cos(x+y) = cos(x)cos(y) -sin(x)sin(y)

cos(x) cos(x)- sin(x) sin (x)= cos^2 x - sin^ 2 x

cos^2 (x) -sin^2 (x) =cos^2 x - sin^ 2 x

Since this is true

cos 2x = cos^2 x - sin^ 2 x

This is true

Substituting 4u back for 2x

cos 4u = co^s2 2u - sin^2 2u

This is true

5 0
3 years ago
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