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

70 decreased by twice a number Use The variable n to represent the unknown number

The table below shows the values of y for different values of x: x y 0 0 1 8 2 16 3 24 Which equation shows the relationship between x and y? x = 8y y =

If air resistance can be neglected, how does the acceleration of a ball that has been tossed straight upward compare with its acceleration if simply dropped?

What is being oxidized?

We deal from a well-shuffled 52-card deck. calculate the probability that the 13th card is the first king to be dealt.

Price elasticity of demand refers to the ratio of the:

The positive principle, the constructionist principle, and the simultaneity principle are principles of:

How many more phases occur during meiosis than during mitosis

Find the length of arc xpy with a radius of 12m. leave in terms of pi./Users/alymcclellan/Desktop/Screen Shot 2017-07-31 at 10.25.17 PM.png

*PLEASE ANSWER*The function y=2x+4 has a domain of 2,3,5,7, and 8...That number is not in the range of the function? A. 8B. 12C. 18D. 20