Hurry will give brainlist and 20 pts when megan solved this system using the elimination method, she added the equations together and got the equation 4y = 16. then she solved that equation and got y = 4. then she substituted 4 in the first equation for y and solved for x. she got x = 4. the point (4, 4) is not the correct solution. state in a complete sentence where she made her first mistake. what is the correct solution to the system? show your work in the space provided. 2x + 3y = 20 -2x + y = 4

Lems1. the following data set represents the scores on intelligence quotient(iq) examinations of 40 sixth-grade students at a particular school: 114, 122, 103, 118, 99, 105, 134, 125, 117, 106, 109, 104, 111, 127,133, 111, 117, 103, 120, 98, 100, 130, 141, 119, 128, 106, 109, 115,113, 121, 100, 130, 125, 117, 119, 113, 104, 108, 110, 102(a) present this data set in a frequency histogram.(b) which class interval contains the greatest number of data values? (c) is there a roughly equal number of data in each class interval? (d) does the histogram appear to be approximately symmetric? if so,about which interval is it approximately symmetric?

Table which ratio is equivalent to 3: 7? 6: 7 3: 21 24: 56 15: 30

Which type of graph would allow us to quickly see how many students between 100 and 200 students were treated?