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
Y= 2(x+3)
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2(-2x-6)
= 2(-3)(x+3)
=-6(x+3)
= -3y
Answer:
-2
Step-by-step explanation:
(7 - 0)/(0 - 3.5) = -2
Answer:
x=36 y=48
Step-by-step explanation:
