Convert 135 milligrams= how many decigrams and how many milligrams

Acamper leaves camp on a kayak and travels 50 miles east on a river, then he ties his kayak to the bank and travels 20 miles north on a bicycle. this trip can be plotted on the coordinate plane, where the camp is the point (0, 0). the distant of the camper to the camp can be found using the distance formula. which other formula can he use? a) 502 - 202 b) 502 + 202 c) 502 - 202 d) 502 + 202

Solve this and show you’re work step by step ! -5 3/4+3h< 9 1/4 -

How to do this , and can some one explain