You have 32 grams of a radioactive kind of gold. if its half-life is 3 days, how much will be left after 6 days?

a. 5 grams
b. 4 grams
c. 16 grams
d. 8 grams

Afarm that has 4 x 10^2 acres has 1.2 x 10^5 cattle. what is the average number of cattle per acre? write the answer in scientific notation. answere asap

Now max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.

How do i i solve this equation? -18 = x/3 + 3