The preschool class has 18 students in the 3-year-old class. There are 3 full-time teachers and 1 half-time teacher for this group of children. What is the ratio of students per teacher rounded to the nearest whole 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?

Use δjkl and δmpn to determine whether don's claim is true or false. which of the following should don use to prove the triangles are similar? sss sas aas aa

Does anyone know how to solve and graph this: 4 + | a + 2 | < 7the only part i don't get is the "4 +"