Answer:
8<8 and 2>8 are both false
B
Step-by-step explanation:
B. 11
When n = 11
The product of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 and 11 is 39,916,800
39,916,800 is a multiple of 990
see explanation
A difference of two squares is factored as
a² - b² = (a - b)(a + b)
(g)
1 - 81y²
= 1² - (9y)²
= (1 - 9y)(1 + 9y)
(j)
64x² - 25y²
= (8x)² - (5y)²
= (8x - 5y)(8x + 5y)
4.92
There are 24 hours in a day, so if it chimes twice in an hour it will chime 24*2 or 48 times a day. There are 7 days in a week, so it will chime 48*7 or 336 times.
20 floor
16 - 11 = 5 5 + 15 = 20
The elevator is on the 20th floor