157, 263, and 3163 are all prime numbers
Written form: fifty thousand eight hundred ninety-seven.
expanded form: 50000+800+90+7
1 km=1093.61yards
6 km= 6*1093.61yards
6 km= 6561.66yards
Answer= 6561.66 yards
N + d = 21
0.5n + 0.10d = 1.35
5n + 10d = 135
d = 21-n
5n + 210 - 10n = 135
-5n = -75
n = 15
d = 6
