a bag contains the letters of the word pennsylvania. a letter is drawn, replaced, then another is drawn. what is the probability that the first letter is an n or a and the second letter has a vertical line of symmetry?

( make sure the probability answer is in fraction form! : ))

5/48

Step-by-step explanation:

There are 12 letters in pennsylvania

P (n or a) = (number of n's and a's)/ total

There are 3 n's and 2 a's

P (n or a) = 5/12

P (Vertical symmetry) = letters with vertical symmetry/ total

Only V  I and Y have vertical symmetry  3 letters

P ( vertical symmetry) = 3/12

Multiply the probabilities together

5/12 * 3/12 = 15/144 = 5/48

to determine the unit cost your would divide the total cost by the number sold.

7 bagels for $4.41       $4.41/7 = $.63 each at fresh side

5 bagels for $3.60         $3.60/5 = $.72 each at value mart

the final amount you will pay is $68.04.

the tip is determined by the pre-tax amount, so we calculate the tip based on the original bill, not after we've added sales tax.

to find the tip:

we can divide 54.00 by 100 to get 1% of 54. then we multiply that by 18.

54 / 100 = .54

.54 x 18 = 9.72

tip = 9.72$

to find the tax:

we can divide 54.00 by 100 to get 1% of 54. then we can multiply that by 8 to get 8%.

54 / 100 = .54

.54 x 8 = 4.32

tax= 4.32

now we can add the tip and tax to the bill to get our total.

54 + 9.72 + 4.32 = 68.04

total: $68.04

step-by-step explanation: