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

What is 6 and 1/5- 2and 1/3

What is the upper quartile in the box plot?

The sum of these consecutive integers is equal to 9 less than 4 times the least of the integer. Find the three integers

For the following geometric sequence, find the recursive formula. {-80, 20, -5, ...} I need help :')

_____________ dominance the dominant allele doesn’t fully mask or hide the recessive. For example, a red carnation with a white carnation will produce a ____

if cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

anyone know this? thank you

In 1876, what labor group formed?

artist use a small scale for portrait of a lover because it implies

The revenues of a company increased by 39% in year one and decreased 22% in year two. What is the overall change over the two-year period?