Answer:
3
Step-by-step explanation:
-5y + 4 = -11 Get rid of the numbers to get y alone.
-5y +4 minus 4 = -11 minus 4 Here you are removing the 4 from the left
-5y = -15 Now you will have to get rid of the -5
-5y/(-5) = -15/(-5)
y = 3
Answer:
The percentage of people that could be expected to score the same as Matthew or higher on this scale is:
= 93.3%.
Step-by-step explanation:
a) Data and Calculations:
Mean score on the scale, μ = 50
Distribution's standard deviation, σ = 10
Matthew scores, x = 65
Calculating the Z-score:
Z-score = (x – μ) / σ
= (65-50)/10
= 1.5
The probability based on a Z-score of 1.5 is 0.93319
Therefore, the percentage of people that could be expected to score the same as Matthew or higher on this scale is 93.3%.
Answer/Explanation:
3) 10x + 5y means the price of an adult ticket and any number of people who would purchase one and the price of a child ticket and any number of people who would purchase one
4) the variable “x” is any number of people purchasing an adult ticket and the variable “y” is any number of people purchasing a child ticket
5) since we already know what the variable “y” is from the question above, the parenthesis (5 + 1 + 1.50 + 3) represents the data from the chart: the cost of a child admission ticket, child ride ticket, a pizza slice, and one cotton candy
6) the expression x + y expresses the total number of adults and child who would attend the local fair
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- emily
(-1,-2) = (-5,2), (-1,0)=(-5,4) , (3,-3) =(-1,1) this might be wrong
