Seven men and seven women line up at a checkout counter in a store. in how many ways can they line up if the first person in line is a man , and the people in line alternate man, woman, man, woman ,and so on

the solution is the point

step-by-step explanation:

we have

> equation a

> equation b

adds equation a and equation b

substitute the value of x in equation b to find the value of y

the solution is the point

sorry

step-by-step explanation:

sorry, but im pretty sure its a now that i look at it

yes

step-by-step explanation:

they have to be opposite and reciprocal of eachother.

step-by-step explanation:

to determine whether a given function is even, we simply substitute x with -x in the expression. if the result after simplification is identical to the original equation, then the function is said to be even other wise odd.

f(-x) = (-x)^2 - (-x) + 8

      = x^2 + x +8

the resulting function is not identical to the original one;

f(-x) ≠ f(x)

therefore, f(x) is not an even function