Hi!
Xian - 60 stamps
Kai - 76 stamps
60 + 12 = 72
76 + 8 = 84
72 + 12 = 84
84 + 8 = 92
84 + 12 = 96
92 + 8 = 100
96 + 12 = 108
100 + 8 = 108
After how many months will Xian and Kai have the same number of stamps?
4 months
How many stamps will each have?
108 stamps
Answer:
3 2/3
Step-by-step explanation:
12 1/2 - 8 5/6
25/2 - 53/6
(75-53)/6
22/6
11/3
3 2/3
Answer:
In a gallon there are 27.63 liters
We will first calculate the total cost in pounds then convert to dollars.
1- Equipment for three offices. The cost is 100 pounds per equipment.
Total cost of equipment = 3*100 = 300 pounds ..........> I
2- One switchboard. The cost is 333 pounds.
Total cost of switchboard = 333 pounds ...............> II
3- Total cost excluding taxes can be calculated by adding I and II as follows:
Cost excluding taxes = 300 + 333 = 633 pounds
4- Tax is 10% of the cost.
Tax amount = 0.1 * 633 = 63.3 pounds
5- Total cost including taxes = 633 + 63.3 = 696.3 pounds
6- Convert the cost to dollars.
We know that 1 pound is equivalent to 1.5$. To know the equivalence of 696.3 pounds, just do cross multiplication as follows:
Cost in dollars = (696.3*1.5) / 1 = 1044.45$
Y = -x^2 + x + 2
y = -x + 3
-x + 3 = -x^2 + x + 2
x^2 - x - 2 - x + 3 = 0
x^2 -2x + 1 = 0
(x - 1)(x - 1) = 0
x - 1 = 0 y = -x + 3
x = 1 y = -1 + 3
y = 2
solutions are : (1,2) , (1,2)
