E = 2 + 1/4 n
n = 40
E = 2 + 1/4(40)
E= 2 + 10
E = 12
Elena scored 12 points
Answer:
tn = n·a
t10 = 10a
Step-by-step explanation:
We observe that the coefficient of 'a' is the term number:
tn = n·a
t10 = 10a
Is the number 30?
(Extra words because I can't post without them)
Answer:
volume = 294 ft3
Step-by-step explanation:
volume = base area * height = 7*7/2 * 12 = 294ft3