A man 6.2 ft tall casts a 8 ft shadow. How tall is a child that casts a 5.6 ft shadow at the same time of the day? (to the neare
2 answers:
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Final Answer: No Solution
Steps/Reasons/Explanation:
Question:
<u>Step 1</u>: Divide both sides by .
<u>Step 2</u>: Expand.
<u>Step 3</u>: Since is false, we have no solution.
No Solution
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Answer:
9. ±1, ±2, ±3, ±6
11. ±1, ±2, ±3, ±4, ±6, ±12
Step-by-step explanation:
The possible rational roots are (plus or minus) the divisors of the constant term, divided by the divisors of the leading coefficient.
Here, the leading coefficient is 1 in each case, so the possible rational roots are plus or minus a divisor of the constant term.
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9. The constant is -6. Divisors of 6 are 1, 2, 3, 6. The possible rational roots are ...
±{1, 2, 3, 6}
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11. The constant is 12. Divisors of 12 are 1, 2, 3, 4, 6, 12. The possible rational roots are ...
±{1, 2, 3, 4, 6, 12}
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A graphing calculator is useful for seeing if any of these values actually are roots of the equation. (The 4th-degree equation will have 2 complex roots.)
