Frankie can build a speaker box in 120 minutes. tisha can build a speaker box 40 minutes faster. if they work together, how many minutes does it take them to build the speaker box? show work or a picture, i am so confused

The first thing you should know is how long it takes each one to build a box.
 We have then:
 Frankie = 120minutes
 Tisha = 120-40 = 80minutes
 Then, we take the average:
 (120 + 80) / (2) = (200) / (2) = 100 minutes.
 answer
 It takes them to build the speaker box 100 minutes.

The major difference is that a histogram is only used to plot the frequency of score occurrences in a continuous data set that has been divided into classes, called bins.  bar charts, on the other hand, can be used for a great deal of other types ofvariables  including  ordinal  andnominal  data sets.

This polygon has 4 sides
180(4-2) = 180(2) = 360 degree
80+90+2x + 3x = 360
170+5x = 360
5x = 190
x= 38
measure of angle t is 2(38)= 76
the answer is c. trust me
hope this !