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 the lcm of 15 and 10 multiplied by the lcm of 6 and 20

three heat related illnesses.

One invention that has made many complex machines possible is the _____. pyramid shaduf wheel printing press

a hospital parking lot charges 2.50 for the first hour, and 1.25 for each additional hour, a weekley pass is 31.00 and allows parking for 7 days. if johnny make

True or False? Models may change as new discoveries are made.

Which offered strong evidence of the existance of the Xia Dynasty?

How do you determine the circumference of a semicircle?

what is 154 times 35?

how do global winds and ocean currents transfer heat around the world?

Solve for x. x/2≥−4 a. x≥−2 b. x≤−2 c. x≥−8 d. x≤−8