straightbarz759
27.01.2021 •
Mathematics
I need help with both of these
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Ответ:
Step-by-step explanation:
1 . (4x² - 9x + 16) + (7 + 9x² - 10x)
4x² - 9x + 16 + 7 + 9x² - 10x
13x² - 19x + 23
2 . (-2x + 6) - (14x - 11)
-2x + 6 - 14x + 11
-16x +17
Ответ:
12
Step-by-step explanation:
The fundamental counting principle states that to find the total number of combinations, we multiply the choices for each element.
She can choose between 2 types of pillows; 2 types of sheets; and 3 types of comforters. This gives us
2(2)(3) = 4(3) = 12