Answer:
7
Step-by-step explanation:
arithmetic sequence: aₙ = a₁ + (n-1)d
a₈ = (-5) + (8-1)d = 37
7d = 42
d = 6
a₃ = -5 + (3-1) x 6 = 7
Higher standard deviation shows a greater spread of the data.
2005 - sd=3.5
2006 - sd=2.8
2007 - sd=1.0
2008 - sd=4.0
The correct statement is the last statement which says the game scores of season 2005 have a greater spread than the game scores of season 2006
Answer:
107 more girls will do gym on Saturday than Thursday and Friday altogether
Step-by-step explanation:
300 girls will do gym on Saturday.
100 girls did gym on Thursday
and 93 girls did gym on Friday.
now,
300 - (100 + 93)
300 - 193 = 107
Im not even sure about this though
5(2x-3)-(x+8)=13
10x-15-x-8=13
9x-23=13
9x=36
x=4
