0.05 because 5 is bigger than 4 plus 4 is negative
Answer is 19;
Problem
a1=325 , d=25 , S19=?
Result
S19=10450
Explanation
To find S19 we use formula
Sn=n2⋅(2a1+(n−1)⋅d)
In this example we have a1=325 , d=25 , n=19. After substituting these values into the above equation, we obtain:
Sn19=n2⋅(2a1+(n−1)⋅d)=192⋅(2⋅325+(19−1)⋅25)=192⋅(650+18⋅25)=192⋅(650+450)=192⋅1100=10450
Answer:
9cm
Step-by-step explanation:
v=m/d
81/3=27cm^3
vol. of cube is h×a×b
since it is a cube all sides are the same
27=3h
h=9cm
3 equivalent ratios or 5/2
10 /4
20/8
30/12
Answer: The third one or C
