Answer:
a) 231
b) 52.8
Step-by-step explanation:
210*.10 = 21. 21+210 = 231
48*.10=4.8 4.8+48 =52.8
Answer:
<h2>-223,948</h2>
Step-by-step explanation:
The formula of a sum of terms of a gometric sequence:

a₁ - first term
r - common ratio
We have

Calculate a₁. Put n = 1:

Calculate the common ratio:


Answer:
62.8 inches
Step-by-step explanation:
because C= 2pi
and 10 times 2 is 20 and 20 times 3.14 is 62.8