Answer: -1(x+2)^2+10
Step-by-step explanation:
1. The coefficient of -x^2 is just the number in front, which in this case would be a = -1 So now the function is -1(x^2+4x)+6 since negative one has been factored out of the first two terms.
2. Half of the coefficient of x would be 2 since x has a coefficient of 4, and half pf 4 is 2. Squared, it is 4. That will be added inside the bracket. Subtracted on the outside is the same equation but multiplied by a, which we found out was -1 in the beginning. So, the function becomes -1(x^2+4x+4)+6-(-4).
3. Factor the inside equation to find that it’ll become (x+2)^2, and simplify the outside to get 10. The function will now be;
f(x)=-1(x+2)^2+10
Hope that made sense and make sure to check just in case I did the math wrong :]
125.13
Step-by-step explanation:
I believe that the answer is D sorry if not though
Answer:
the 1st graph that has a point of (4,5)
Answer:
60.5 milligrams per square centimeter First, determine how many half lives have expired by dividing the time by the half-life. So: 55/20 = 2.75 That means that only 2^(-2.75) = 0.148650889 = 14.8650889% of the original substance remains. So just divide the amount remaining by 0.148650889 to get the original amount. 9 / 0.148650889 = 60.5445419 So originally, there was 60.5 milligrams per square centimeter 55 years ago.