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asambeis [7]
3 years ago
8

Pls help 0.4x3.2 step by step pls

Mathematics
1 answer:
horsena [70]3 years ago
3 0

Answer:

1.28

Step-by-step explanation:

0.4 x 3.2 = 1.28

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The first term of GP, a=4

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Sin2x-sin2xcos2x=sin4x
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It looks like the given equation is

sin(2x) - sin(2x) cos(2x) = sin(4x)

Recall the double angle identity for sine:

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Move everything over to one side and factorize:

sin(2x) - sin(2x) cos(2x) - 2 sin(2x) cos(2x) = 0

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sin(2x) = 0   or   1 - 3 cos(2x) = 0

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… … …   or   [2x = arccos(1/3) + 2nπ   or   2x = -arccos(1/3) + 2nπ]

(where n is any integer)

[2x = 2nπ   or   2x = π + 2nπ]

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7 0
3 years ago
(9r - 5 ) - ( -4r + 9 ) Can you subtract the expression
Elis [28]

Answer:

13R - (-14)

Step-by-step explanation:

I believe this is the right answer i really hope it is im sorry if its wrong

Have a good day!

4 0
3 years ago
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A 50lb block of cheese is cut into 1 1/4 lb blocks. Each 1 1/4 lb block can sell for $4.25 each. How much money can you make wit
Anettt [7]

Answer:

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Step-by-step explanation:

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HOPE THIS HELPS :)

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Nash Inc. sells prepaid telephone cards to customers. Nash then pays the telecommunications company, TeleExpress, for the actual
Zolol [24]

Answer:

January $0

February = $550

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April  = $150

Step-by-step explanation:

Revenues

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Expenses

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