Write a system of equations to describe the situation below, solve using substitution, and fill in the blanks. Erin is collecting pledges for a walk-a-thon. Her mother has pledged a flat donation of $7, and her grandmother has pledged $1 per kilometer. If Erin walks a certain distance, the two donors will end up owing the same amount. What is that distance? How much will each donor owe?

If Erin walks kilometers, her mother and grandmother will each owe $

What other information do you need to prove triangle dac=bca by asa

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?

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236