Answer:
Mean = -1,115,000 per year.
Step-by-step explanation:
Mean = (Σx)/N
The mean is the sum of variables divided by the number of variables
Σx = sum of variable = change in number of visitors over a 10 year period = -11150000
N = number of variables = 10
Mean = (-11150000)/10
Mean = -1,115,000 per year.
Hope this Helps!!!
Answer: Each shirt costs $1.25, and each hat costs $2.5.
Step-by-step explanation:
Let x= Cost per T-shirt, y = Cost per Hat.
As per given,
3x+3y=11.25 (i)
4x+2y=10 (ii)
Multiply 4 to equation (i)
12x+12y=45 (iii)
12x+6y= 30 (iv)
Eliminate (iv) from (iii), we get
6y= 15
⇒ y = 2.5
Put value of y in (i)
3x+3(2.5)=11.25
⇒3x+7.5=11.25
⇒3x= 3.75
⇒x= 1.25
Hence, each shirt costs $1.25, and each hat costs $2.5.
Answer:
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Step-by-step explanation:
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