Olga tried to solve an equation step by step. 4
(x+) = 6
£x+9=
}&=15
k+9 = 24 Step 1
3
k
= 15 Step 2
k5
Step 3
Find Olga's mistake.

Determine the relationship of ab and cd given the following points

Nine more than four times a number is the same as one less than twice the number. find the number?

Do social recommendations increase ad effectiveness? a study of online video viewers compared viewers who arrived at an advertising video for a particular brand by following a social media recommendation link to viewers who arrived at the same video by web browsing. data were collected on whether the viewer could correctly recall the brand being advertised after seeing the video. the results are given below. correctly recalled the brandarrival 409153browsing20484b. conduct the hypothesis test, using the 0.025 level of significance. what is the value of the test statistic? χ2stat=what is the p-value? p-value=is this value significant atα=0.025?