Round each number to the nearest tenth of a million

a) 678 537 299
b) 4 009 682
c) 20 009 879

Can someone pls ! pls answer all. no explanation needed..

Secant ac and bd intersect at point e inside f what is the measure of aed if measurements cd equals 30 a b is 50 and cb is 170

The first side of a triangle measures 5 in less than the second side, the third side is 3 in more than the first side, and the perimeter is 17 in. how long is the third side? if s represents the length of the second side, which of the following represents the length of the third side? s-5 ws-2 s+ 3 next question ask for turn it in