Y varies inversely with x. When x = 3 then y = 5. Find the value of x when y = 21
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D) because the final answer should be 8/3. See the attachment.
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This is a incomplete quadratic equation, because it does not have the term bx. Therefore, we can solve this faster with the following strategy:
Add 16 to both sides:
Take the square root:
Therefore:
This is a incomplete quadratic equation, because it does not have the term bx. Therefore, we can solve this faster with the following strategy:
Add 16 to both sides:
Take the square root:
Therefore: