Answer:
x=0, y=1.
Step-by-step explanation:
-8x+12y= 12
-2x-12y= -12 Adding these 2 equations:
-10x = 0
x = 0.
Plug this into equation 1:
-8(0) + 12y = 12
12y = 12
y = 1.
Neither parallel nor perpendicular
Technically there are a ton of answers.
Try 3,000*10^1
Or 300*10^2
Possibly 30*10^3
Even 3*10^4
Answer: 9
Step-by-step explanation: 31-4=27
This could be rephrased as:
You start with 100 grams of a substance. One year later you have 70 grams. What is the half-life?
We need this formula:
half-life = (time * natural log (2)) / natural log (beginning amount / ending amt)
half-life = (1 year * .69315) / natural log (100 / 70)
half-life = (.69315) / 0.35667494396
half-life = 1.9433661145 years
Rounding to nearest year half-life = 2 years
Sourse: https://www.1728.org/halflif2.htm
(See problem 3)
