Astudent is given the problem: x^3+7x+9. which of the following statements is false? a. completing the square cannot be used to solve the given equation. b. completing the square can only be used to solve a quadratic equation. c. completing the square can be used to solve the given equation. d. completing the square cannot be used because of the x^3 term.

  False: C. Completing the square can be used to solve the given equation.

Step-by-step explanation:

First of all, no equation is given. Any answer that suggests a way of finding solutions to the given equation will be false.

The statement of B is debatable. The method of completing the square is most often used for quadratics, but might reasonably be applied in any situation where a perfect square can be created by regrouping the terms.

Statements A and D essentially say the same thing. Both are true. That fact makes statement C false. Statement C is the one you're looking for.

7 weeks

step-by-step explanation:

convert each fraction to the least common multiple of 20, so 3/4 = 15/20 & 1/10 = 2/20, then divide 15 by 2 and you get a little over 7, so the food will last 7 weeks.