60° r
(4x)"
what is the missing reason in step 3?
reasons
given
definition of linear pair
2
statements
mztrv=60° mztrs= (4x)
_trs and _trv are a linear pair
m. trs + matrv-180
60-4x-180
4x120
x-30
substitution property of equality
subtraction property of equality
division property of equality

An optical inspection system is used to distinguish among different part types. the probability of a correct classification of any part is 0.92. suppose that three parts are inspected and that the classifications are independent. let the random variable x denote the number of parts that are correctly classified. determine the probability mass function of x. round your answers to four decimal places (e. g. 98.7654). x f(x) 0 1 2 3

The area of square garden is 300m squared. how long is the diagonal?

Data from 2005 for various age groups show that for each $100 increase in the median weekly income for whites, the median weekly income of blacks increases by $105. also, for workers of ages 25 to 54 the median weekly income for whites was $676 and for blacks was $527. (a) let w represent the median weekly income for whites and b the median weekly income for blacks, and write the equation of the line that gives b as a linear function of w. b = (b) when the median weekly income for whites is $760, what does the equation in (a) predict for the median weekly income for blacks?