Write each number in expanded form, then write in word form 23.5 164.38 209.106

Iwant to know what 3g+5h+4g-2h is my teacher is too selfish to tell us

Aplane flies around trip to philadelphia it flies to philadelphia at 220 miles per hour and back home with a tailwind at 280 miles per hour if the total trip takes 6.5 hours how many miles does the plane fly round trip

In trapezoid abcd, ac is a diagonal and ∠abc≅∠acd. find ac if the lengths of the bases bc and ad are 12m and 27m respectively.