Answer:
C = 40 degree
AB = 5.785 = 55.79, = 5.8 = 6 (4,3,2,1 significant figures)
BC = 11.748 = 11.75 = 11.7=12 (4,3,2,1 significant figures
Step-by-step explanation:
ASA Angle Side Angle (given)
90-50=40 degree as all angles within triangle add up to 180 degree
C = 40 degree
AC (given = 9
AB = A/H = 9xcos(50) = 5.8 measure
BC = O/H = 9 / sin (50) = 11.7 measure
Ratio 1:3 can be written as 1/3
sale price / original price : 1/3 = x / 81
this is a proportion, so we cross multiply
(3)(x) = (1)(81)
3x = 81
x = 81/3
x = 27 <== sale price
and notice that 1/3 = 27/81...these are equivalent fractions because that is what proportions are, equivalent fractions
Picture with the red boxes inside the ANSWER is the first choice
4n+4
4(1)+4= 8 white boxes in figure 1
4(2)+4= 12 white boxes in figure 2
4(3)+4= 16 white boxes in figure 3
4(4)+4=20 white boxes in figure 4