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nadezda [96]
3 years ago
8

The first problem. Divide

Mathematics
1 answer:
4vir4ik [10]3 years ago
5 0
Th answer is x-2.hope this helps
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Kruka [31]
X(-x^4)(-x^4)=

The answer is x^9
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3 years ago
A frame is marked down by 22 percent from an original price of $14.50. What is the new price?
Valentin [98]
22% = 22/100 22/100 * 14.50 = 3.19 (this is the amount discounted off original price) 14.50 - 3.19 = $11.31
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Write expression as a sine or cosine of an angle.<br>cos 94° cos 18° + sin 94° sin 18° ​
MArishka [77]
<h3>Answer:  cos(76)</h3>

=========================================================

Explanation:

The original expression is of the pattern cos cos + sin sin. This pattern matches the second identity in the hint. Specifically, we'll say the following:

cos(A - B) = cos(A)cos(B) + sin(A)sin(B)

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cos(94)cos(18) + sin(94)sin(18) = cos(94 - 18)

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----------

We can verify this by use of a calculator. Make sure your calculator is in degree mode.

  • cos(94)cos(18) + sin(94)sin(18) = 0.24192
  • cos(76) = 0.24192

Both expressions give the same decimal approximation, so this helps confirm the two expressions are equal. You could also use the idea that if x = y, then x-y = 0. Through this method, you'll subtract the left and right hand sides and you should get (very close to) zero.

6 0
2 years ago
Factorise 15x + 35y - 40 z
xxTIMURxx [149]
Put number five as a common factor.

15x + 35y + 40z = 5 . 3x + 5 .7y + 5 .8z

= 5 . ( 3x + 7y + 8z )
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Any real number will work with the equation y=x

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