Mean = (1+3+3+4+4+4+4+5+5+5) / 10 = 3.8
answer
mean = 3.8
30 years - 14 years = 16 years
82 coins - 18 coins = 64 coins
64/16 = 4 coins per year or 4 countries per year
Shirley should visit about 4 countries per year.
Answer:
74.5
Step-by-step explanation:
Mean: 75
Median: 74.5
Mode: 72
Definition: The median is the middle number if you put the numbers in numerical order.
Answer:
there are no solutions as the two straight lines represented by the two equations are parallel, so they have no point in common
Step-by-step explanation:
general equation of a straight line: ax + by + c = 0
the slope (or raise) of a straight line m is equal to -a/b (b=1 a=-2 in this exercise as the equation is 1y=-2x - 4)
so m1 = -2/1 = -1/2
and m2 = -2/1 = -1/2
there is also a geometrical explanation, but I am not sure if it could be too complex