Answer:
Answer (f(x)= (x, plus or minus ___)^2 plus or minus ____ I have worked this to x, 4 a Algebra -> Quadratic Equations and Parabolas -> SOLUTION: Rewrite the quadratic equation in standard form by completing the square.
Step-by-step explanation:
Not sure question is complete, assumptions however
Answer and explanation:
Given the above, the function of the population of the ants can be modelled thus:
P(x)= 1600x
Where x is the number of weeks and assuming exponential growth 1600 is constant for each week
Assuming average number of ants in week 1,2,3 and 4 are given by 1545,1520,1620 and 1630 respectively, then we would round these numbers to the nearest tenth to get 1500, 1500, 1600 and 1600 respectively. In this case the function above wouldn't apply, as growth values vary for each week and would have to be added without using the function.
On one hand, the function above could be used as an estimate given that 1600 is the average growth of the ants per week hence a reasonable estimate of total ants in x weeks can be made using the function.
Answer: the probability that during a randomly selected month, PCE's were between $775.00 and $990.00 is 0.9538
Step-by-step explanation:
Since the amount that the company spent on personal calls followed a normal distribution, then according to the central limit theorem,
z = (x - µ)/σ
Where
x = sample mean
µ = population mean
σ = standard deviation
From the information given,
µ = $900
σ = $50
the probability that during a randomly selected month PCE's were between $775.00 and $990.00 is expressed as
P(775 ≤ x ≤ 990)
For (775 ≤ x),
z = (775 - 900)/50 = - 2.5
Looking at the normal distribution table, the probability corresponding to the z score is 0.0062
For (x ≤ 990),
z = (990 - 900)/50 = 1.8
Looking at the normal distribution table, the probability corresponding to the z score is 0.96
Therefore,
P(775 ≤ x ≤ 990) = 0.96 - 0.0062 = 0.9538
Answer:
The correct option is (a+b)+c
Step-by-step explanation:
The correct option is (a+b)+c
According to the Associative property for Addition:
a+(b+c)=(a+b)+c
The associative property states that you can add or multiply regardless of how the numbers are grouped.
.If you are adding or multiplying it does not matter where you put parenthesis.
Thus the correct option is A....
Answer: x= -4
Step-by-step explanation:
Combine like terms
-4x -7 -3x + 4 = 25
-7x -3 =25
Add 3 on both sides
-7x=28
Divide by -7 on both sides
x= -4
Hope this helps! :)