You first need to find the last angle measurement which is
60 because 60+15+105= 180
Sin60 Sin105
——— = ———— Cross multiply
a 2
Sin60 * 2 = Sin105*a
1.7 = Sin105*a Divide both sides by sin105
1.79 = a
1.8 ≈ a
A. 12 dollars IP is a 50% increase on 24 dollars
b. poorly phrased question. ...% of 50 % increase or decrease? if increase is 50% of 36 dollars... that's 18 dollars to add on to the new 36dollar price.
18+ 36=54dollars
if it's a decrease it goes down by 18 to 18dollars
4 and -4, since both 4^2 and (-4)^2 is 16.
There is this website called calculatorsoup.com its for any math problems you have and it shows the work.