Answer:
Is irrational
Step-by-step explanation:
Let be a rational number, and be an irrational number. If their sum were rational, say , then we'd have
but is the difference between two rational numbers, and thus a rational number. But it also equals , which is irrational by hypothesis. Since we have a contradiction, we conclude that the sum of a rational and an irrational can't be rational.
Answer:
no es un elemento de la tabla periódica
Start at 16 and count up by 2 until 26.
Answer:
425 in2 (square inches)
Step-by-step explanation:
Find Triangle Area:
Side a = 18
Side b = 8
Side c = 16
Find Trapezoid Area:
Exponential Growth
Some real-life events grow in such a way that they can be modeled as an exponential function, given as:
Where C(t) is the future value of the measured variable, Co is its initial value, r is the growth rate and t is the time.
We are given the following data:
Initial amount: Co=40 bacteria
Growth rate: 1 + r = 3
The bacteria triples every 4 days, thus t is the number of periods of 4 days.
Thus the model is:
We can solve the equation
1 + r = 3
And get r = 2. Rewriting the equation:
We are required to find the number of bacteria after 20 days, that is, after 20/4 = 5 periods of 4 days. Substituting:
Calculating:
The colony would have 9,720 bacteria after 20 days