What’s 20.155 rounded to the nearest tenth

20.2

Step-by-step explanation:

tens are the first decimal point, so you know that you're rounding based on whether or not the second decimal point (the hundreds) is below 5 or 5 and above. Because it is 5, you are rounding up, making the tens place a number higher, and geting rid of the last two numbers.

answer: a

step-by-step explanation: the answer is a due to the rule of symmetry; that a line of symmetry must divide a figure into 2 pieces that are the exact same, only reflected over a line of symmetry. b and c do not have lines of symmetry and would not divide the figure evenly, thus making the answer a.