Answer:
742
Step-by-step explanation:
27 + 31 + 35 + ...
a = 27
d = 31 - 27 = 4
S14 = (14/2)[2(27) + (14-1)(4)]
= 7(54 + 52)
= 7(106)
= 742
Answer:
28
Step-by-step explanation:
20 books per box and x number of boxes.
To write an equation you have to figure out what variable you are solving for, which is x. Then you see what x is, which is the number of boxes. Finally you figure out what it takes from the given no. to get to the answer, x.
y = no. of books
x = y/20
The answer to this question is <span>C. 60%</span>