cho tam giác ABC nhọn. E,F, G lần lượt là trung điểm của cạnh AB, AC, BC. chứng minh tứ giác BEFG là hình bình hành

Data are collected to see how many ice-cream cones are sold at a ballpark in a week. day 1 is sunday and day 7 is the following saturday. use the data from the table to create a scatter plot.

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Anew shopping mall is gaining in popularity. every day since it opened, the number of shoppers is 5% more than the number of shoppers the day before. the total number of shoppers over the first 10 days is 1258 how many shoppers were on the first day?