Circle x is shown in the diagram. which equation can be used to solve for m∠1?
a m∠1 = 1/2(a – b)
b m∠1 =1/2 (a + b)
c m∠1 = 1/2(c – d)
d m∠1 = 1/2(c + d)

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.

Find the value. a. 0.003 b. 0.03 c. 0.3 d. 3

Ibeg you to me 20. a reaction produces 4.93 l of oxygen, but was supposed to produce 1 mol of oxygen. what is the percent yield?