X= # of eraser packages = 135
y= # of pencil packages = 85
cost = 2x + 5y = 695
# of items = x+y= 220
2x+5y=695
-2x -2y=-440
3y 255
----- = ------- y=85 x+(85) / 220
3 3 ----- -----
-85 -85
x=135
2(135) + 5 (85) ?695
270+425?695
695+695
Answer:
deez
Step-by-step explanation:
nutz
Answer:
The mean and standard deviation of the corrected pH measurements are 6.63 and 3.8025 respectively.
Step-by-step explanation:
We can correct the values of the mean and standard deviation using the properties of the mean and the variance.
To the original value X we have to add 0.2 and multiply then by 1.3 to calculate the new and corrected value Y:
The mean and standard deviation of the original value X are 4.9 and 1.5 respectively.
Then, we can apply the properties of the mean as:
For the standard deviation, we apply the properties of variance:
The properties that have been applied are:
Answer:
The answer is "Option A".
Step-by-step explanation:
In this, the question is missing so, we assuming the missing question is this question, which is add in attach file. please find it.
Formula for line:
In the question the slope "m= 3 and y= -2" so, the line is .