Convert

a. 10 kg into tonne
b. 9.8 kg into gram
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2x + 1 < 5 solve the following inequality. then place the correct number in the box provided.

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

The measurement of one angle of a right triangle is 42° what is the measurement of the third angle? (there is no picture)