Using the pin keypad in the picture, you can see that there are two letters on the number 1 key and three letters on 2 to 9 number keys. how many different pins are represented by the same sequence of keys as 2181?
question 11 options:
a)
36
b)
10
c)
1
d)
24

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°

8/k

step-by-step explanation:

hard

step-by-step explanation:

replication and blocking

step-by-step explanation: