PLEASE HELP EASY MATHHH EASY 10 POINTS

Convert the number to decimal form. 12) 312five a) 82 b) 30 c) 410 d) 1560 13) 156eight a) 880 b) 96 c) 164 d) 110 14) 6715eight a) 53,720 b) 3533 c) 117 d) 152

Hurry the figure shows the front side of a metal desk in the shape of a trapezoid.what is the area of this trapezoid? 10 ft²16 ft²32 ft²61 ft²

Why is partitioning a directed line segment into a ratio of 1: 3 not the same as finding the length of the directed line segment?