If John, Trey, and Miles want to know how’ |
many two-letter secret codes there are that dont

Tolnaio
2021-10-07
Answered

If John, Trey, and Miles want to know how’ |
many two-letter secret codes there are that dont

You can still ask an expert for help

Viktor Wiley

Answered 2021-10-08
Author has **84** answers

Trey and Miles are correct — we can either use the reasoning “we do not
want for the two letters to be the same, so for the first letter we have 26
choices and for the second we have 25”, so we get 26-25, or we can find
the number of all two-letter codes, which we have 26-26, and subtract the
number of two-letter codes with a repeated letter, which we have 26.

Adding 26 and 25 makes no sense, since for each choice of the first letter we have 2% additional codes.

Adding 26 and 25 makes no sense, since for each choice of the first letter we have 2% additional codes.

asked 2021-09-21

For the following exercises, enter the data from each table into a graphing calculator and graph the resulting scatter plots. Determine whether the data from the table would likely represent a function that is linear, exponential, or logarithmic.
$$\text{Misplaced hline}$$

asked 2020-10-27

Find the x- and y-intercepts of the equation.

$-5x+8y=80$

asked 2021-01-02

Find the x-and y-intercepts of the graph of the equation algebraically.

$y=4(7x+1)$

asked 2021-05-19

If Julia is traveling along a highway at a constant speed of 50 miles per hour, how far does she travel in two hours and 30 minutes?

asked 2021-02-25

To calculate:The score Grant must earn on his fifth test to have an average of 90 if on Grant's four College Algebra tests his scores were 76, 91,97 and 87.

asked 2021-02-01

To calculate:The total cost of producing 1000 books and 32,000 books.

asked 2022-04-15

Find the exponential model that fits the points shown in the table. (Round the exponent to four decimal places.)

x | 0 | 5 |
---|---|---|

y | 3 | 1 |