kaecie
kaecie kaecie
  • 22-05-2018
  • Mathematics
contestada

solve using the quadratic formula

-4.9t^2 + 20t + 10

Respuesta :

jdoe0001 jdoe0001
  • 22-05-2018
[tex]\bf ~~~~~~~~~~~~\textit{quadratic formula} \\\\ \begin{array}{lcccl} y=& -4.9 t^2& +20t& +10\\ &\uparrow &\uparrow &\uparrow \\ &a&b&c \end{array} \qquad \qquad t= \cfrac{ - b \pm \sqrt { b^2 -4 a c}}{2 a} \\\\\\ t=\cfrac{-20\pm\sqrt{20^2-4(-4.9)(10)}}{2(-4.9)}\implies t=\cfrac{-20\pm\sqrt{400+196}}{-9.8} \\\\\\ t=\cfrac{-20\pm\sqrt{596}}{-9.8}\implies t=\cfrac{20\mp\sqrt{596}}{9.8}\implies t\approx \begin{cases} -0.4503174725\\ 4.53195012566 \end{cases}[/tex]
Answer Link

Otras preguntas

What was two negative effects on native americans of their alliances with European s?
Celia is making smoothies. How many 1/4 cup of peaches are used in the recipe. the recipe require 1/2 cup of peaches
there are 8 students on the minibus. Five of the students are boys. What fraction of the students are boys?
Which of the following statements about Woodrow Wilson is true?
How do historians and learn about people who lived in the earliest historical eras.
Several students were talkimg about taking time off after graduating from high school so that they could spend two years traveling around the world. One student
What is 3 ones and 8 tenths is decimal form
Find the missing number 12,24,72,288 and blank
what is the greatest number which can be made using each of the digits 53147
The failure to regulate the pH of the blood can affect the activity of...