Ravi and tikiera are making halloween pencil toppers to raise money for the math club. ravi can make one pencil topper in 10 minutes and tikiera can make one pencil topper in 9 minutes. if they work together, how quickly can they make one pencil topper? round your answer to the nearest tenth of a minute.

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?

Complete the solution of the equation. find the value of y when x equals to 28 x+3y=28

An alternative to car buying is to make monthly payments for a period of time, and then return the vehicle to the dealer, or purchase it. this is called