Toothpickboy4452 Toothpickboy4452
  • 03-07-2018
  • Mathematics
contestada

Suppose that a is a nonzero constant for which the equation ax^2+20x+7=0 has only one solution. find this solution.

Respuesta :

konrad509
konrad509 konrad509
  • 03-07-2018
[tex]\Delta=0\\\\ \Delta=20^2-4\cdot a\cdot7=400-28a\\ 400-28a=0\\ 28a=400\\ a=\dfrac{400}{28}=\dfrac{100}{7} [/tex]
Answer Link

Otras preguntas

20 POINTS!!!!! Target is having a Back to School sale where all polo shirts are discounted by 20%. Joshua wants to buy five shirts: two cost $10.98 each, one c
14. Why is it important for the students to stay together?​
Dont mind the blue numbers. Please help!​
A. Find the following measurements and indicate the reason or show your work B. Find the values of x and y. Show all your work.
Which factor will not affect the strength of a solenoid
How did the desire for natural resources contribute to western settlement from 1854 to 1890
21. Define specific purpose
which of the following are powers that are exercised by both the national government and state governments at the same time? a)concurrent powers b)enumerated po
how can a map of the seafloor be generated using mechanical waves? Please Help!!!
What is the value of x? Enter your answer in the box. x =