Answer:
10
Step-by-step explanation:
this is easy... subtraction
Answer:
2400 mm
Step-by-step explanation:
(80 x 60) - (60 x 40)
The first term a = 1,
Common difference, d: 7 - 1 = 6.
a(n) = a + (n -1)d,
For 30th term. = 1 + (30 -1)*6
= 1 + 29*6 = 1 + 174 = 175
Answer:
17.4 inches
Step-by-step explanation:
The mean is the average of all the numbers listed in the set. In order to find the mean you must add up all the numbers in the set and divide it by the number of numbers in the set.