Points for my peeps yo

Need 50 will mark brainliest answer. find the lengths of all the sides and the measures of the angles.

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.

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?