Within economics, the variable is the factor that
a. must remain constant
b. can change
c. will never change due to market factors
d. will only change when demand increases

The correct answer is B. Within economics, the variable is the factor that can change.

Explanation:

An economic variable is the representation of an economic concept that can be measured or take various numerical values, that is, it can change according to different situations. Most of these variables must satisfy the condition of non-negativity; that is, they cannot be less than zero.

angle a = 40.6°

step-by-step explanation:

for any right angle triangle we know the pythagoras theorem reveals

hypotenuse² = height²+base²

by this formula we will calculate the length of hypotenuse

h² = 6²+7²

⇒ h =√36+49 = √85 = 9.22

now from the given triangle sin a = height/ hypotenuse

                                                sin a = 6/9.22 = 0.651

therefore

so angle a = 40.6°

china has confucianism thats everywhere in asia but it isn't really a religion.