Answer:
y = x + 1.8
Step-by-step explanation:
10 days is twice the half-life. After 5 days, can expect
grams to remain; after another 5 days, you'd be left with
grams.
Answer:
y=1/3 -4
Step-by-step explanation:
use y2-y1/ x2-x1
2-1/2-+1 + 1/3
Answer:
The proportion of piano prices higher than the electric piano is 98.3%
Step-by-step explanation:
The first thing to do here is to calculate the standard score of the price of the electric piano given.
Mathematically, this is
z-score = (x-mean)/SD
where mean is 3000 and SD is 200, x is 2576
z-score = (2576-3000)/200 = -2.12
Now we proceed to calculate the probability of this z-score
The probability we are trying to calculate is
P( x > $2576) or simply P ( z > -2.12)
Using standard score probability calculator or table, we have
P(x>2576) = 1 - P(x<2576)
But, P(x<2576) = 0.017003
P(x>2576) = 1 - P(x<2576) = 0.983
This is same as 98.3%
