1) 4*3 - 9
2) 15 - 12
3) 4 - 1
4) 54 + 1 - 52
5) 9*3+2-26
Hope this helps!
The sum of a geometric series is given by:
Sn=[a(r^n-1]/(r-1)
the nth term is given by
an=ar^(n-1)
From the information given:
a1=0.28, r=6
the sum of the first 5 terms will be:
s₅=[0.28(6^5-1)]/(6-1)
s₅=[0.28(7776-1)]/5
s₅=2177/5
s₅=435.4
Answer:
number of students tickets = 80
number of adults tickets = 145
Step-by-step explanation:
Let
x = number of students tickets
y = number of adults tickets
x + y = 225 (1)
3x + 8y = 1400 (2)
From (1)
x = 225 - y
Substitute x = 225 - y into (2)
3x + 8y = 1400 (2)
3(225 - y) + 8y = 1400
675 - 3y + 8y = 1400
- 3y + 8y = 1400 - 675
5y = 725
y = 725/5
y = 145
Substitute y = 145 into (1)
x + y = 225 (1)
x + 145 = 225
x = 225 - 145
x = 80
number of students tickets = 80
number of adults tickets = 145
Answer:
a)5 b)15
Step-by-step explanation:
5 times 11=55
15 times 3 is 45
add together is 100
5+15 is 20 questions