Answer:
<h2>There are 30 possible combinations of picking two letters.</h2>
Step-by-step explanation:
The combinations are defined as

Where
is the total number of elements and
is the number of letter we are gonna picke, which is two. Using this information, we have

Therefore, there are 30 possible combinations of picking two letters.
The precision is 10 inches. This is because the 0 at the end of the number is not considered a significant digit in the form in which the number is written, and hence "80 inches" is to be considered a roundoff from a number which can be from 75-85 inches.
Answer:x=7
Step-by-step explanation:
Steps down below. Remember that angles on a straight line add up to 180 degrees
Answer:
Step-by-step explanation:
