4,000,000
400,000
00,000
8,000
700
30
0
        
             
        
        
        
Answer:
d= 8.6 ft
Step-by-step explanation:
In similar triangles, the corresponding sides are in proportion.

To find the value of x,

 
d = 8.6 ft
 
        
             
        
        
        
Answer:
78
Step-by-step explanation:
Given that:
First day (a) = 1
1 more pebble every subsequent day than the previous day
Tn = a + (n - 1)d
d = common difference ; difference between pebbles in two successive days = 1
n = nth day
At the end of the 12th day;
Tn = a + (n - 1)d
T(12) = 1 + (12 - 1) 1
T(12) = 1 + 11
T(12) = 12
Appling the sun if arithmetic progression formula : Sum of AP:
n/2 (a + Tn) 
n = number of terms
12/2 (1 + 12)
6(13)
= 78
 
        
             
        
        
        
.Answer: C
Step-by-step explanation:
 4.5+p would be the full length of 18 since it is sharing the total length.