Okay, so a half-life means that every so and so (which in this case is 4 hours), what we have is now equal to half of that (although it does do this more gradually).
The answer to this would be 50(0.85)x
Complement means to add to 90 so 90-67=23 so the answer is 23
Answer:
88
Step-by-step explanation:
180 = (56+36)+x
180 - 92 = x
x = 88
Answer:
the third one
Step-by-step explanation:
6 = 2(x+8) - 5x
⇒ 2x+ 2*8 -5x= 6
⇒ (2x -5x)+ 16= 6
⇒ -3x = 6 -16
⇒ -3x = -10
⇒ x= -10/(-3)
⇒ x= 10/3
⇒ x= 3 1/3
The correct answer is B. 3 1/3~
