Jeanette's sister charges $5.50 per hour before 9: 00 pm for babysitting and $8 per hour after 9: 00 pm. she finished babysitting at 11: 00 pm and earned $38. at what what time did she began babysitting?

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

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?

The lengths of all sides of a triangle are integers when measured in decimeters. one of the sides has length of 1 dm and another of 3 dm. find the perimeter of the triangle.'