Brenda's vegetable garden has 20 rows with 13 plants in each row. Brenda plans to plant peppers in the first 3 rows and the last 3 rows of the garden. The rest of the rows will be tomatoes.
How many tomato plants will Brenda plant?
Brenda will plant LI
tomato plants.

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

Find the measure of the interior angles of the following regular polygons: a triangle, a quadrilateral, a pentagon, an octagon, a decagon, a 30-gon, a 50-gon, and a 100-gon.

Aregular pentagon with a perimeter of 21 inches is dilated by a scale factor of 5/3 to create a new pentagon. what is the perimeter of the new pentagon?