7 cheese:8
7 pepperonis:3
7 veggie:1
8 cheese:4
8 pepperoni :5
8 veggie:3
Sin x = 7/12
x = arcsin (7/12) = 35.69°
Answer:
-2, -6
Step-by-step explanation:
using cramer rule
5 -3
-2 -1
calculatiing the determinant = (5 x-1) - (-3x-2) = -5 -(6) = -5-6=-11
using cramer rule
to calculate x we change the coefficient of x with the answer (8,10)
8 -3
10 -1
we calculate determinant = (8x-1)-(-3x10) = -8-(-30) = -8+30 =22
to calculate x
22/-11= -2
to calculate y we change the coefficient of y with the answer (8,10)
5 8
-2 10
we calculate determinant = (5x10)-(8x-2) = 50 -(-16) = 50 +16=66
to calculate y
66/-11= -6
Answer:
down in rate = 680-540 = 140
% change = 140*100/680 = 20.58%
