Which expression is not equivalent to 1/343 a 7^4 * 7^-7 b 7^7 * 7^-10 c 7^-2 * 7^-5 d 7^-5 * 7^2

Describe the symmetry of the figure. identify lines of symmetry, if any. find the angle and the order of any rotational symmetry.

Factor the monomial completely 42a3b3

The annual snowfall in a town has a mean of 38 inches and a standard deviation of 10 inches. last year there were 63 inches of snow. find the number of standard deviations from the mean that is, rounded to two decimal places. 0.44 standard deviations below the mean 2.50 standard deviations below the mean 0.44 standard deviations above the mean 2.50 standard deviations above the mean