What is the area of this figure? triangle 19 cm

5 cm

8 cm

4 cm

12 cm

21 cm

9 cm

9 cm

Write your answer using decimals, if necessary.

square centimeters

Ameteorologist is studying the monthly rainfall in a section of the brazilian rainforest. she recorded the monthly rainfall, in inches, for last year. they were: 10.4, 10.3, 11.7, 11.1, 8.0, 4.4, 2.6, 1.8, 2.5, 4.4, 7.3, 9.5 fill in the missing values in the formula. what is the variance?