The form of the equation is point-slope form, and it's in the form (y-y1)=m(x-x1), where m is the slope. Therefore, 3 is the slope in this case because 3=m.
Hope this helped :)
The answer is .1391
Hope this helps!
(If your confused, I just put this in a calculator)
The rules are very simple: an angle is acute if it's less than 90°, whereas it is obtuse if it's more than 90°.
So, for the first task, you just need to compare the given angle with 90°. If the angle is less than 90°, it's acute. Otherwise, it's obtuse.
Moving on, angle B is complement of a angle A if A+B=90. So, for example, the complement of the first angle is 80, because 10+80=90. Note that this implies that obtuse angles don't have a complement.
Finally, angle B is supplement of a angle A if A+B=180. So, for example, the complement of the first angle is 170, because 10+170=180.
A kilogram is 100 grams. We can convert 1/5 kg into 1/5 of 100g... or 20g
3/5 g < 20 g
1/5 of a kilogram is heavier.
