Answer:
Step-by-step explanation:
first term = a = 3
common ratio = 2nd term ÷ first term
= 12 ÷ 3
r = 4
Answer:
1/2
Step-by-step explanation:
Hi Avahosel2020!
To find the value of 
we need to simplify the equation:
25 = 12.5
To just get , we must divide 25 on both sides:
= 
<u>We can move the decimal one spot over and add a 0 to the denominator:</u>
= 
=
Simplifying!
= 
.
Thus, has the value of 
.
Answer:
Step-by-step explanation:
o,o is in the origin
Answer:
1. (x,y)→(y,-x)
2. (x,y)→(-y,x)
3. (x,y)→(-x,-y)
Step-by-step explanation:
1. Rotation 90° clockwise (or 270° counterclockwise) about the origin changes x into y and y into -x, so it has the rule
(x,y)→(y,-x)
2. Rotation 90° counterclockwise (or 270° clockwise) about the origin changes x into -y and y into x, so it has the rule
(x,y)→(-y,x)
3. Rotation 180° clockwise about the origin changes x into y and y into -x, so it has the rule
(x,y)→(-x,-y)
Here you can apply rotation by 90° clockwise twice, so
(x,y)→(-y,x)→(-x,-y)
