z varies jointly with x and three times y. When x = -1 and y = -4, z = 12. Find z when x = 3 and y = 2.
1. Determine the relationship expression:
Since varies jointly with and three times , we can write , where is a constant.
2. Find the value of :
When and , . Substituting these values into the expression gives .
Simplifying, , so .
3. Find when Click "Show Answer" to reveal the answer and analysis
Click "Show Answer" to reveal the answer and analysis
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