Answer:
.05x+.04(x-1,900)=185
.05x+.04x-76=185
.09x=185+76
.09x=261
x=261/.09
Step-by-step explanation:
y=
suppose 4:4:7 be 4x, 4x, 7x
or, 15x = 180°
or, X = 180/15
or, X = 12
therefore,
4x = 4x12= 48
4x= 4x12= 48
7x= 7x12= 84
so if you plus all of them you get 180
Answer: (0.974, 1.056) liters
option 3
sin45° = 11/BC
=>1/√2 = 11/BC
=>BC = 11√2