Answer:
30.7
Step-by-step explanation:
Assuming the angled are degrees and not radian.
side BC= (11÷sin67)•sin28= 5.6
angle ABC= 180-67-28=85°
A= 11•5.6•sin85÷2≈30.68
If the first number is x-1, since the numbers are consecutive, the second number will be x, the third number will be x+1 and the fourth number will be x+2.
(x-1) +(x) + (X+1) (X+2) = 354
4x + 2 =354
Therefore,
X = 88
First equation 2(4X -5y = 4)
8X -10y = 8
Elimination 8x -10y =8
-8x + 9y =-8
-y =0
-1(-y =0)
y =0
8x -10(0) =8
8x =8
(8x =8)/8
x = 1
The answer would be 1 solution