Find the limit, if it exists. (if an answer does not exist, enter dne. ) lim (x, y)→(0, 0) x4 − y4 x2 y2.

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?

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827