Hello there!
2x - 7 = 3
Solve for x
2x = 3 + 7
2x = 10
x = 10/2
x = 5
Therefore, the number of x in the equation is 5
Let me know if you have additional question!
Answer:
Step-by-step explanation:
Hello!
You need to construct a 95% CI for the population mean of the length of engineering conferences.
The variable has a normal distribution.
The information given is:
n= 84
x[bar]= 3.94
δ= 1.28
The formula for the Confidence interval is:
x[bar]±
*(δ/n)
Lower bound(Lb): 3.698
Upper bound(Ub): 4.182
Error bound: (Ub - Lb)/2 = (4.182-3.698)/2 = 0.242
I hope it helps!
Markup = $4
b) markup as a percentage of cost is 33.3%
Step-by-step explanation:
Markup
markup = selling price - cost
= $13 - 9
... markup = $3
Markup as a Percentage of Cost
To find the percent markup, divide the markup by the reference value and multiply the ratio by 100%. The reference value for markup is usually cost price, but sometimes may be selling price.
... markup / cost × 100% = 3/9×100% = 33 1/3% ≈ 33.3%
Answer:
A. 
Step-by-step explanation:
We have been given that f be a differentiable function such that
, 
, 
, and 
. The function g is differentiable and 
for all x.
We know that when one function is inverse of other function, so:
Upon taking derivative of both sides of our equation, we will get:
Plugging 
into our equation, we will get:
Since , then 
.
Since we have been given that , so we will get:
Therefore, and option A is the correct choice.
Answer:
6
Step-by-step explanation:
The rational root theorem states that the roots must be factors of p/q
where p is the constant and q is the coefficient of the highest order term
p = 8 which has factors ±1, ±2,±4,±8
q = 1 which has factors ±1
The possible roots are ±1, ±2,±4,±8
--------------------
±1
which simplifies to
±1, ±2,±4,±8
6 is not a possible root
