What is 9809.24 rounded to the nearest ten

9810
this would be your answer because the last 2 numbers, in this case, 09 are closest to ten. if the last 2 numbers were 49, then it would round up to 50.

if the last number is 5 or higher, the second to last number moves up.

if the last number is 4 or lower, the last number changes to 0 and the second. to last number stays the same

Gdjehhjjjbb bvggcddfghg bbgg

This polygon has 4 sides
180(4-2) = 180(2) = 360 degree
80+90+2x + 3x = 360
170+5x = 360
5x = 190
x= 38
measure of angle t is 2(38)= 76
the answer is c. trust me
hope this !