3x +12 = 18
-12 -12
---------------
3x 6
-- = --
3 3
x = 2
Answer:
c
Step-by-step explanation:
because all the x values in c are different
Answer:
286
Step-by-step explanation:
Use term formula for +/-
Tn = a + (n-1)d
n= number of term
a= first number in sequence
d= difference between each number
T55 = 16 + (55-1)5
T55 = 16 + 270
=286
Answer:
27
Step-by-step explanation:
28+17+17+15=76
76÷4= 19