Answer:
(i) 16 (ii) 29 (iii) 76 (iv) 23
Step-by-step explanation:
i just plugged everything into the equations.
Step-by-step explanation:
B
1100
To find the sum of the first n terms of an arithmetic series use the formula,
S
n
=
2
n(a
1
+a
n
)
S
20
=
2
20(10+100)
S
20
=
2
2200
S
20
=1100
Answer:
i think it is 2, please forgive me if im wrong
Step-by-step explanation:
Answer:
18
Step-by-step explanation:
Simple, just take 125 divided by 2.
Since 2 can't go into 1, you go over 1 more number, which gives you 12. Thus, 2 can go into 12, 6 times. Which leaves you the 5, 2 can go into 5, only 2 times, thus you have a remainder of 1. Put in your decimal point, and 2 can go into 10, 5 times. Thus, your answer is 62.5, 62 1/2, or 125/2.