Two chemical reactions are shown: A. Ca(OH)2 → Cao + H2O
B. 4K + 02 → 2K20
Which statement is true?
A is a synthesis reaction, and B is a decomposition reaction.

Both are synthesis reactions.

Both are decomposition
reactions.

A is a decomposition reaction, and B is a synthesis reaction.

Suppose that an airline uses a seat width of 16.516.5 in. assume men have hip breadths that are normally distributed with a mean of 14.414.4 in. and a standard deviation of 0.90.9 in. complete parts (a) through (c) below. (a) find the probability that if an individual man is randomly selected, his hip breadth will be greater than 16.516.5 in. the probability is nothing. (round to four decimal places as needed.)

Write the expression as a single natural logarithm. 2 in a - 4 in y

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.