Answer:
The Subjects: The subject of this research are the drivers who were selected randomly to take part in the experiment
The Treatment: The treatment for this research will therefore be driving and also talking on a cell phone at the same time and also driving while not talking on the phone
The response variable for the experiment: The number of errors that will be made by the drivers as they drive on an obstacle course.
Step-by-step explanation:
Answer:
Exponential
Step-by-step explanation:
<em>Starter:</em>
According to the title:
"Every day, half a bacteria population dies."
Exponential: y = ab^x ( b > 0 , b ≠ 1)
So the answer is C.
<em>Calculations:</em>
An exponential model is of the form y = a • b^t.
If you start with population of 500 million bacteria
t = 0
so 500 million = a • b^0 = a
Since every day half the population dies then in 1 day population will be 250 million
so a = 500 million, y = 250 million and t = 1
250 million = 500 million • b^1
b = 0.5
Therefore your equation would be
y = 500 million (or whatever the pop) • 0.5^t
Where t = number of days
This could also be written in exponential form ( e = 2.73)
9514 1404 393
Answer:
(x +yi)²
Step-by-step explanation:
Comparing the given expression to the square of a binomial, we can determine the given expression to be a square.
(a +b)² = a² +2ab +b²
Here, we have a=x and b=yi. Then the factorization is ...
x² +2xyi +(yi)² = (x +yi)²
Since the sweater is now 30% off, that means it is selling for 70% of it's original price ( 100% - 30% = 70%).
Multiply the original price by 70%:
52 x 0.70 = 36.40
The sale price is $36.40
Answer: X = -4
Step-by-step explanation: Isolate the variable by dividing each side by factors that don't contain the variable.
