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

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

an ostritch can run at a rate of 50 miles in 60 minuites. how long would it take an ostrich to run 15 mikes

Why do you think the West Coast was settled before the interior of the United States?

3x^2-11x-4 divided by x-4

Tamika went hiking with her friends.the beginning of the elevation of -1. The highest elevation on the hiking path 100 feet. What is the difference in two eleva

A clown bought 6 bags of round balloons with 24 balloons in each bag

what the answer to 6q-1=-q+20

The fall of Tenochtitlán in 1521 was significant because

If y=2x+7 were to change to y=1/2+7, how would the new graph compare to the original graph?

A scientist begins working by trying to explain a natural occurrence that is

Roman has 2 red pencils in his backpack. If this is 25% of the total number of pencils, how many pencils are in his backpack?