If there is an error explain what should have been

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found, describe in words what step was taken. If there is an error, explain what should have been done. ( 10 points: 2 points for each step) # Algebraic step Error? Yes/No Description of step/Correction of error
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1 point each 1 point each d = 16 1 No error You must isolate t in order for this equation to work, so you divide both sides by 16. 2 No error t is now isolated (besides the exponent) 3 No error Now, fully isolate t by square rooting both sides of the equation. 4 Error The 16 can be simplified to 4, but the d can’t be further simplified. It must be square rooted. 5 t No error t is fully isolated now.
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3. Given that the confetti is going to be dropped from 25 feet up and land on a person who is about 6 feet tall, use the correct formula (solved for t ) from the chart above to find out how long the actor should hold her position before moving on. (Hint: First calculate how far the confetti must drop.) ( 4 points ) Since the distance is 25-6=19, we need to take the square root of 19, or 4.3588, and divide by 4, which is 1.08972 seconds. 4. Explain how solving an equation with several variables is similar to and different from the process of solving equations in one variable. ( 2 points ) They’re similar because the goal is to simplify the equation as much as possible and you have to isolate one variable. However, they are different because if you for one variable an equation with multiple variables, you still have much more work to do because you’ve only figured out a portion of the answer. When you solve for the variable in a single variable equation, you’re pretty much done. 5. Describe any practical problems or other considerations that might need to be made related to timing the fall of the confetti. ( 1 point ) Some concerns that they should take into consideration with this scenario are if the person dropping the confetti is correctly on queue, the mass of the confetti, or any air resistance.
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  • Fall '19
  • Equations, Expression, Elementary algebra, Square number, Equation solving

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