There are 15 students volunteering for a project. Some of them are freshmen and some are sophomores. Sophomores have volunteered 2 hours each and freshmen have volunteered 3 hours each with a total of 40 hours volunteered. Try to write a system of equation store present this situation and then solve the system.

Asap for seven months an ice creams vendor collects data showing the number of cones sold a day (c) and the degrees above 70 degrees f the vendor finds that there is a positive linear association between c and t that is the best modeled by this equation c=3.7t+98 which statement is true? the model predicts that the average number of cones sold in a day is 3.7 the model predicts that the average number of cones sold i a day is 98 a model predicts that for each additional degree that the high temperature is above 70 degres f the total of number of cones sold increases by 3.7 the model predicts for each additional degree that the high temperature is above 70 degrees f the total number of cones sold increasingly by 98

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*