What is the height of a triangle of base 10m and an area of 60m²​

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

Solutions for 2x+7 less than or equal to 3x-5

What are the coordinates of the point that is 1/3 of the way from a to b? a (2,-3) b (2,6)