Can anyone answer this question and show the working

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Is the square root of 4 plus the square root of 16 rational?

Amajor grocery store chain is trying to cut down on waste. currently, they get peaches from two different distributors, whole fruits and green grocer. out of a two large shipments, the manager randomly selects items from both suppliers and counts the number of items that are not sell-able due to bruising, disease or other problems. she then makes a confidence interval. is there a significant difference in the quality of the peaches between the two distributors? 95% ci for pw-pg: (0.064, 0.156)