Answer:
The fourth line will have 15 marbles
Step-by-step explanation:
The third line has 7 marbles. So, you double that and add one in order to find the number of marbles in the fourth line.
7*2=14
14+1=15
5(w - 2)(w + 2)
5w² - 20
5(w² - 4)
x >/ 13
-9+x >/ 4
add 9 to both sides. therefore:
+9-9+x >/ 4+9
0+x >/ 13
(4,6)
is the missing pair.
Slope = 1/8
(20-18)/11- - 5)
= 2/16
= 1/8