I have a basic exponential division question that I am pretty sure my Pearson is incorrect about.

7^n/5 / 7^n-1/5 SHOULD equal 1/7^1/5 BUT Pearson is saying the answer is 7^1/5.

Maybe I'm wrong. Help me out here. If you subtract n/5 -n-1/5 you should get -1/5, no?

edit: Oh wait... is it because 7^n/5 / 7^n-1/5 translates the denominator as a negative on top of the ruled negative?

aka 7^n/5 / 7^n-1/5 = n/5 - - n-1/5 ???

     7^(n/5) / 7^((n -1)/5) = 7^(1/5)

Step-by-step explanation:

First of all, you need parentheses on exponents that include any sort of arithmetic. You also need parentheses on any numerator or denominator that includes any sort of arithmetic. We assume you're interested in ...

  7^(n/5) / 7^((n -1)/5)

Your subtraction needs to take into account the distributive property. The outside factor (-1) applies to every inside term.

1. sometimes

2.   never

3   .08c = 7.50+.05c   250 pages

step-by-step explanation:

1.   sometimes

the theoretical probability of rolling a 1 is 1/6.   perhaps you got really lucky and never rolled a 1   in those 60 times.   your experimental probability is 0.   or perhaps you rolled a 1   20 times.   your experimental probability is 20/60 is 1/3.     it really just depends on how you rolled in that experiment.

2.   never

the probability of the event occurring is 1.   that is being 100 % sure it will happen.   that is the maximum amount of confidence we have.

3.   no customer card cost:   .08 times number of pages

customer card cost:   7.50 + .05 times number of pages

we want to find when it costs the same amount, so we will set these equal

let c = number of pages

.08c = 7.50+.05c

subtract .05c from each side

.08c-.05c = 7.5+.05c-.05c

.03c=7.5

divide each side by .03

.03c/.03 = 7.5/03

c =250  

the cost is the same at 250 pages

the solution is x=1

step-by-step explanation:

we are given our   equation as

let's assume

left side function is

right side function is

now, we can draw graph

and then we can get intersection point

the intersection point will be solution

so, the solution is

x=1