The starting percent is 100%. After one hour, bacteria tripled, so it is 300%.
A is the correct answer I hope that helps :)
The first one is -5,-3 ab.
Answer:
x∉R
Step-by-step explanation:
1) Solve the quadratic equation 9x²-18x+14=0 using x=(-b±√b²-4ac)/2a:
x=(-(-18)±√(-18)²-4×9×14)/2×9
2) Evaluate the power, calculate the product and multiply the numbers:
x=(18±√324-504)/18
3) Calculate the difference:
x=(18±√-180)/18
4) The square root of a negative number does not exist in the set of Real Numbers:
x∉R
Answer:
62% and 161.29%
Step-by-step explanation:
Given that the percentage of adult height attained by girls who are x years old can be modeled by
, where
x represents the girl's age (from 5 to 15) and
f(x) represents the percentage of her adult height
A) When age =5, we have x=5
So height when age is 5 is 62 %
B) The approximate of her adult height is
