Answer:
X = 80°
Step-by-step explanation:
55+45=100
180-100=80 angles in a triangle=180°
So Y = 80
and Y=X because opposite angles around a point are equal
This type of situation applies first order type of equation. In this case, the equation is ln( A0/A1) = kt. A is the number of bacteria cultured. A0 is equal to 150. when A1 is 300, t is 20 minutes. that is ln (150/300) = k *20 the other condition is represented by ln (A0/1200) = 60k. k is equal to -0.0347. hence the first order equation is equal to ln (150/A1) = -0.0347 t
Answer:
x = -(3/2)
Step-by-step explanation:
i'm going to assume that the left side is (2/3)x and not 2/(3x). If so let me know and i'll change it.
(2\3)x =-1 (multiply both sides by 3)
2x = -1 (3)
2x = -3 (divide both sides by 2)
x = (-3) / 2
x = -(3/2)
