5 1/6 minus 1 2/3 PLZ HELP NOW
2 answers:
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Answer:
y = 4
Step-by-step explanation:
Given that y varies jointly with x and z then the equation relating them is
y = kxz ← k is the constant of variation
To find k use the condition y = 16 when x = 4 and z = , that is
16 = k × 4 × = 2k ( divide both sides by 2 )
8 = k
y = 8xz ← equation of variation
When x = 2 and z = , then
y = 8 × 2 × = 16 ×
= 4
Given the model of the Exponential Regression:
By definition:
You can see in the table the observed y-values (the temperature in Fahrenheit)
In order to find the Predicted y-values, you need to substitute all the x-values given in the table (the time in minutes) into the equation and then evaluate. You get:
Now you have these points:
Therefore, you can plot them on the Coordinate Plane:
By definition, when the residual plot shows a pattern, a non-linear regression model is appropriate for the data. Therefore, the Exponential Regression Model is a good fit.
Hence, the answer is:
- Residual Plot:
- First option.
