S = 1 + 3 + 5 + ... + 11 + 13 + 15
S = 15 + 13 + 11 + ... + 5 + 3 + 1
==> 2S = (1 + 15) + (3 + 13) + (5 + 11) + ... + (15 + 1)
There are 8 terms in the sum, so
2S = 8 * 16 = 128
S = 128/2 = 64
12/20=.6
Thus, move the decimal point two places to the right, and the answer is 60%
The level has dropped 11 mms in 22 hours
that is 0.5mm per hour
So the remaining 31 mm will be gone in 31 / 0.5 = 62 hours
62 hours after 11 am Wednesday brings us to 11 am Friday + 14 hours
= 1 am Saturday. answer
Answer:the answer is simple it equal 315
Step-by-step explanation:
the first thing you do is to multiply 4x5,5x6,2x5,10x5
Answer:
D.
Step-by-step explanation:
sec A = 1/sin A
cos theta = -2/sqrt(3)
sec theta = 1/[-2/sqrt(3)] = -sqrt(3)/2
Answer: D.
