Answer:
The formula 
Step-by-step explanation:
<em><u>Explanation</u></em>
Given W = x² - 2 y z
2 y z = x² + W
Dividing '2z' on both sides , we get

⇒ 
Answer:
x=50°
Step-by-step explanation:
52°+78°+x°=180°(by angle sum property)
130°+x°=180°
x°=180°-130°
x°=50°
Answer:
x÷14
Step-by-step explanation:
easy dude easy this needs to be 20 characters long
<h3>ANSWER</h3>
first is the geometric series
<h3 /><h3>EXPLANATION</h3>
a geometric series is a sequence of numbers whose first term is non zero and each of the succeeding terms is equal to the Prcedding term multiply by a constant number.
if a = first term
and constant number = d
then
GP is given by
a,a r , a r^2 ,a r^3 .............and so on
in first
a = 1/2
and d = 1/2
and hence it is an GP