Ask Question
8 September, 07:43

Jivesh also has a more powerful Model B rocket. For this rocket, he uses the equation h=-490t^2+1260t. When is the height of the Model B rocket 810 centimeters? (it also includes number 19, but I need 20)

+3
Answers (1)
  1. 8 September, 07:48
    0
    1.29 s

    Step-by-step explanation:

    h = - 490t² + 1260t

    810 = - 490t² + 1260t

    490t² - 1260t + 810 = 0

    49t² - 126t + 81 = 0

    (7t - 9) ² = 0

    7t - 9 = 0

    t = 9/7

    t ≈ 1.29
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “Jivesh also has a more powerful Model B rocket. For this rocket, he uses the equation h=-490t^2+1260t. When is the height of the Model B ...” in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers