Answer:
8n+11y+2
Step-by-step explanation:
The Mongols struggled to govern such an enormous empire.
Answer:
a) $70
b) 4000 items
c)$4.67/hr
Step-by-step explanation:
a) simplest, 28 (per 1000) x2 plus 14 for 500
b) 28*4=112. it could be 3.57143, but no one wants part of an item
c) 28/6=4.66667
Answer: 47, 74
Step-by-step explanation:
Let x = units digit
x – 3 = tens digit
Then the number is 10(x – 3) + x and the reversed number is 10(x) + (x – 3)
Equation
The reversed number plus the original number equal 121.
10(x) + (x – 3) + 10(x – 3) + x = 154
10x + x – 3 + 10x -30 + x = 121
22x – 33 = 121
22x = 154
x = 7 (units digit)
x – 3 = 4 (tens digit)
Answer
The number is (4 X 10) +7 or 47.
