Answer:
6,138
Step-by-step explanation:
Given the following:
Vocalist needed :
First day (a) = 6
For subsequent days : number doubles
Using the relation. :
Sn = a(r^n -1)/(r -1)
Where a = first term = 6
r = common ratio = r3/r2 = r4/r3
Since number doubles after each consecutive day, then ; r = 2, n = 10
Sn = 6(2^10 -1)/(2 -1)
Sn = 6(1024 - 1) / 1
Sn = 6144 - 6
Sn = 6138
Answer=C
30minutes=0.5hours
20km/0.5hours=40km/h
Answer=C
Answer:
x = 52
Step-by-step explanation:
Formula
Combine the left
Multiply both sides by 4
4*(48 + x)/4 = 25 * 4
48 + x = 100 Subtract 48 from both sides
48 - 48 +x = 100 - 48 Combine
x = 52
Answer:
d. 32
I believe I might be wrong