To the "debate on how to do this problem"
Just use the standard form -> nth term= a1 + (n-1)*(D)
in this case
100th= 15 + (100-1) (-6)
100th= -579
where d is the common difference, a1 is the first term and n is the number of terms, then you'll never loose track of negatives!
Answer:
slope is -1/12
Step-by-step explanation:
slope =y2 - y1 / x2-x1
there's not enough information to solve
Where is the figure KingBroski?
Answer:
surface area≈126.65
Step-by-step explanation:
A=2AB+(a+b+c)h
AB=s(s﹣a)(s﹣b)(s﹣c)
s=a+b+c
2
Solving forA
A=ah+bh+ch+1
2﹣a4+2(ab)2+2(ac)2﹣b4+2(bc)2﹣c4=5·7+5·7+5·7+1
2·﹣54+2·(5·5)2+2·(5·5)2﹣54+2·(5·5)2﹣54≈126.65064