Answer:
area of trapezium=1/2 ×20(38+18)=560cm²
Answer:
A scatter plot (aka scatter chart, scatter graph) uses dots to represent values for two different numeric variables. The position of each dot on the horizontal and vertical axis indicates values for an individual data point
Make the bottom numbers the same, do whatever you do to the bottom to the top, and add the top numbers.
I'm pretty sure it's Identity I hope it helps :)
