What is the reason for the fourth statement in this proof?
a. definition of collinear points
b. segment addition
c. subtraction property of equality
d. substitution property of equality

Each morning papa notes the birds feeding on his bird feeder. so far this month he has see. 59 blue jays, 68 black crows, 12 red robin's and 1 cardinal. what is the probability of a blue jay being the next bird papa sees

Find the value of x. round the length to the nearest tenth

Atriangular field has sides of lengths 21, 39, and 41 yd. find the largest angle. (round your answer to the nearest degree.)