Which problem could be solved by evaluating the expression 7×(-3)

2 answers:

8 0

C.

3 degree of temperature is decreased every hour.
so total temperature difference in one hour is -3

and in 7 hours, the difference is 7 * -3

Makovka662 [10]3 years ago

4 0

Try c.
7x-3=-21=temperature drop in 7 hrs
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Since we don't have prior info for the proportion of interest we can use $\hat p=0.5$ as estimator. And on this case we have that $ME =\pm 0.025$ and we are interested in order to find the value of n, if we solve n from equation (a) we got: