Answer:
3 is the correct answer (see explanations for each possible choice)
Step-by-step explanation:
1 cannot be right because 3 times smaller than 9 would be 3 as 1/3*9=3
2 cannot be right because 3 less than 9 is 9-3=6
3 is right because 3 times as much as 9 is 9*3=27
4 cannot be right because 3 more than 9 is 3+9=12
8+4^2-3(7)+3^2
8+16-3(7)+9
8+16-21+9
24-21+9
3+9
=12
Answer:\frac{s-a}{n-1}
Step-by-step explanation:
formula, s=a+(n-1)d
1. get rid of the a on d's side by subtracting it from both sides.
s=a+(n-1)d becomes s-a=(n-1)d
2. get rid of (n-1) by dividing it from both sides. s-a=(n-1)d becomes
\frac{s-a}{n-1} =d
Answer:
x=3.5
Step-by-step explanation:
