( x^4 - 4 x³ + 2 x² - 4 x + 1 ) : ( x² + 1 ) = x² - 4 x + 1
- x^4 - x²
------------------------
- 4 x³ + x² - 4 x
4 x³ + 4 x
-----------------------
x² + 1
- x² - 1
----------------
R ( x ) = 0
( x^4 - 4 x³ + 2 x² - 4 x + 1) = ( x² + 1 ) ( x² - 4 x + 1 )
Hillbilly crazy boy go wild
<h2><u>Answer:</u></h2>
Goal = 45 (expected mean per week)
Ice creams sold each day = 54,45,33,39,48,40,21
Total Ice creams sold = 54+45+33+39+48+40+21 = 280
Total number of observations = 7
Mean = Total sum/total number of observation
= 280/7 (on simplification) = 40
Expected goal = 45
Mean of ice creams actually sold = 40
More ice creams to sell = Expected goal - Mean of ice creams actually sold
(on substituting the values)
= 45-40
<h2>= 5</h2>
Thus , the answer is option D , which is <em><u>5</u></em><em><u>.</u></em>
Answer:
5
Step-by-step explanation:
The exchange rate is 10 CAD = 7 USD
Which means:
10/7 CAD for EACH USD
So, d USD would be:
d * 10/7 = (10d)/7 CAD
This is what she has now, after exchange (in CAD).
She spends 60 and has "d" left, so finding d:
Hence, d = 140
The digits of d are 1, 4, and 0
The sum is:
1 + 4 + 0 = 5
The sum is 5