Lucy uses a code to open a lock. The code is a letter followed by a 2-digit number.
The letter is L or U.
The number is a prime number between 20 and 30
Write down all the possibilities for Lucy's code.

L23

L29

U23

U29

Step-by-step explanation:

We have two elements for the code:

Letter: The options are L and U.

Number: A prime number between 20 and 30, the options here are:

23, 29 (These are the only two prime numbers between 20 and 30)

Then the possible combinations are:

L23

L29

U23

U29

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2

i believe the correct answer is option 4.principalities were small territories that were run by russian rulers.

which statement correctly defines principalities in northern asia in the 1200s? principalities were small territories that were run by russian rulers.

hope i could ! : )