Zainab runs her own business where she leads guided day-long tours for small groups of tourists in her city. Each

tour has a maximum of 3 guests. Let X represent the number of customers Zainab gets on a randomly chosen

day. Based on previous data, here is the probability distribution of X along with summary statistics:

X = #of customers

0

1

P(X)

0.20

0.10

0.40

0.30

Mean: Hx = 1.8

Standard deviation: Ox 1.08

Pro

Tee

It costs Zainab $5 each day to pay for her own transportation to her business, and then each customer she gets

pays her $60. Let Y represent Zainab's net gain on a randomly chosen day.

What are the mean and standard deviation of Y?

Hy =

dollars

dollars

3/4 ÷ 3/4

step-by-step explanation:

basically divide any proper fraction with itself to fit the criteria.

so if we are using 3/4, then:

3/4 ÷ 3/4 = 1

so 1 is the quotient.

and the numerators for both these fractions is 3.   and if we divide the numerators:

3 ÷ 3 = 1

we see that quotient is equal to our original quotient as well.

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it

i would be happy to . most people on would also love to i'm sure. if you just want someone who has done algebra before and want a little more personal relationship than just begging strangers for , i can certainly be of service. i do have college myself so i might not be 24/7.