Step-by-step explanation:
( 12 : 4 : 8 ) ÷ 24 = 1/2 : 1:6 : 1/3
First you express it as a fraction so that would be 2475/1000 which can be simplified to 99/40
Multiply 
A 170 pound astronaut would weigh 68 pounds on mars.
Hope this helps :)
It’s the first one ( quadratic )
Hey!
Hope this helps...
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Assuming that the sum of all the angles must equal 180°
180 - (27+10) = k
180 - 37 = k
k = 143°