Chemistry... please help me

m=9

step-by-step explanation:

7m+8=71 subtract   8 from 71 which is 63 than divide it by 7m   equal 9.

                             

Ans. : frostbite is when exposure to cold temperatures causes freezing to the skin or other tissues. it most commonly affects the hands, feet, and face. the longer areas are exposed to cold, typically the worse the frostbite. the water temperature used for rewarming a frostbitten part should be : (102 -105) f degrees.

B"hf and f-"  is the correct answer took the test on edgenuity and got it right     

Ican't see the chart but the density of both nickel and cobalt is 8.90 g/cm3, so it would be one of those.