Answer:
289
Step-by-step explanation:
Raise 17 to the power of 2
Is this what you are asking for
10book=30mins
divide 10
1book=3mins
time=(time to read 1 book) times (number of books)
time to read 1 book=3 mins
15 books
15 books=15 times 3mins
15books=45mins
45 mins
Answer:
Step-by-step explanation:
Using the addition formulae for cosine
cos(x ± y) = cosxcosy ∓ sinxsiny
---------------------------------------------------------------
cos(120 + x) = cos120cosx - sin120sinx
= - cos60cosx - sin60sinx
= - cosx - sinx
squaring to obtain cos² (120 + x)
= cos²x + sinxcosx + sin²x
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cos(120 - x) = cos120cosx + sin120sinx
= -cos60cosx + sin60sinx
= - cosx + sinx
squaring to obtain cos²(120 - x)
= cos²x - sinxcosx + sin²x
--------------------------------------------------------------------------
Putting it all together
cos²x + cos²x + sinxcosx + sin²x + cos²x - sinxcosx + sin²x
= cos²x + cos²x + sin²x
= cos²x + sin²x
= (cos²x + sin²x) =
Answer:
Mean: 6.8
Median: 2
Mode: There is no mode of the data set
Step-by-step explanation:
Finding the mean: 5+8+2+9+10= 34 divided by the numbers of the data set which is 5= 6.8
Finding the median: The middle of the data set which is 2
Finding the mode: the most frequently occurring number which doesn't appear in this data set which means there is none.