Answer:
Step-by-step explanation:
=7 (1+11+111+1111......n)
=7/9 (9+99+999+9999....n)
=7/9 ((10-1)+(10^2-1)+(10^3-1)+....n)
=7/9 ((10+10^2+10^3...n)-(1+1+1+1.....n))
=7/9 ((10 (10^n-1)/(10-1))-n)
Answer:
2 x 20 + 2 x 15 = 40 + 30 = 70
Step-by-step explanation:
2x20=40
2x15=30
40+30=7
11.5 kilograms
3.5kilo - 15kilo = 11.5kilo she can carry in luggage
The answer is:
60%=0.6=3/5
0.23<24%<1/4
37.6%>3/8>0.27