I’m so sorry I would try my best to answer but I can’t :(
Since it has a half life of 60 days, this means that every 60 days it multiplies by 0.5. Since it asks for 300 days, your equation is 500*(0.5)^5, which is 15.625 mg left after 300 days.
-9×+1=-×+17
-9×=-×+16 (subtract 1 from both sides)
-8×=16 ( add x to both sides)
×=-2 (divide -8 from both sides)
The term 1.05 consists of the initial value 1 and the rate of change 0.05, (the latter being expressed as a decimal).
Therefore the correct answer choice is C.
Answer:
The value of x is 43, the angle measures of the polygon are as follows:
top left = 129
top right = 86
bottom left = 55
bottom right = 90
Step-by-step explanation:
I calculated x with the following equation.
3x + 2x + (x + 12) + (2x + 4) = 360
Since all of the angles of this polygon add up to 360, I just put the angle measures on one side and 360 on the other. This is essentially like saying 360 = 360. Now all that is left to do is simplify and calculate the value of x.
5x + (x + 12) + (2x + 4) = 360
8x + 16 = 360
8x = 344
x = 43
Next, I plug the angle's into their expressions to solve for their individual values.
top left:
3x
3(43)
129
top right:
2x
2(43)
86
bottom left:
(x + 12)
(43 + 12)
55
bottom right:
(2x + 4)
[2(43) + 4]
(86 + 4)
90
All that is left to do is check our answer by adding up all the angles to see if they equal 360.
129 + 86 + 55 + 90
360
Because this equals 360, this answer is correct.
