C because it simplifies to 0=0 which proves that it has infinite solutions!
It could be 7 groups of 1 3 groups of 2 with one left over or 2 groups of 3 with 1 left over
Answer:
46°
Step-by-step explanation:
tan Ф = 21/20
Ф = tan-1 (21/20)
= 46°
Step-by-step explanation:
1/ 3 is the probability of getting one head
5/7-4/6
take the least common multiple of six and seven
which is 42
5*whatever multiple of 7 that gives you 42
5*6=30
plus
4* whatever multiple of six that gives you 42
4*7=28
subtract 28 from 42
your answer 14
