It would be (0,-4).
If you do 9(0) + 7(-4) it would be 0 + -28 which equals -28.
1.875 ounces for each student
Answer:
128
Step-by-step explanation:
well x be 128 cause their vertical angles
Answer:
The answer would be -2 then.
Step-by-step explanation:
Answer:
Step-by-step explanation:
For a first order decay, fraction remaining = 0.5n where n = number of half lives elapsed.
fraction remaining = 55% = 0.55
0.55 = 0.5n
log 0.55 = n log 0.5
-0.2596 = -0.301 n
n = 0.8625 = # of half lives elapsed
0.8625 half lives x 2.5 billion years/half live = 2.16 billion years have elapsed = age of the rock
b) 0.15 = 0.5n
log 0.15 = n log 0.5
-0.824 = -0.301 n
n = 2.74 half lives
2.5 billion years/half life x 2.74 half lives = 6.85 billion years = age of rock
