Select the statement that best justifies the conclusion based on the given information.
if x + y = z and x = y, then the conclusion is x + x = z.
a. addition property of equality
b. additive inverse
c. closure
d. substitution

Complete the statements about the system of linear equation respresented by the tables the equation respented the left table is

Evaluate the expression. (9 + 5)(3 + 2)0

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)