In this diagram, cd is the perpendicular bisector of ab. the two-column proof shows that ac is congruent to bc. which of the following would justify step 6?
step 1 : cd is the perpendicular bisector of ab. justification: given
step 2: ad =`` bd (ad is congruent to bd). justification: definition of bisector
step 3: cd is congruent to cd. justification: reflexive property of congruence
step 4: adc and bdc are right angles. justification: definition of perpendicular lines
step 5: adc is congruent to bdc. justification: all right angles are congruent.
step 6: adc is congruent to bdc. justification: ?
step 7: ac is congruent to bc. justification: cpctc
which of the following would justify step 6?
a) aas
b) asa
c) sas
d) sss

Rai compares two cable plans from different companies. which equation gives the correct value of mm, the number of months for which plans a and b cost the same?

65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?

1. the manager of collins import autos believes the number of cars sold in a day (q) depends on two factors: (1) the number of hours the dealership is open (h) and (2) the number of salespersons working that day (s). after collecting data for two months (53 days), the manager estimates the following log-linear model: q 4 equation 1 a. explain, how to transform the log-linear model into linear form that can be estimated using multiple regression analysis. the computer output for the multiple regression analysis is shown below: q4 table b. how do you interpret coefficients b and c? if the dealership increases the number of salespersons by 20%, what will be the percentage increase in daily sales? c. test the overall model for statistical significance at the 5% significance level. d. what percent of the total variation in daily auto sales is explained by this equation? what could you suggest to increase this percentage? e. test the intercept for statistical significance at the 5% level of significance. if h and s both equal 0, are sales expected to be 0? explain why or why not? f. test the estimated coefficient b for statistical significance. if the dealership decreases its hours of operation by 10%, what is the expected impact on daily sales?