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

Given the balanced equation: F2 energy → F F Which statement describes what occurs during this reaction? (1) Energy is absorbed as a bond is formed. (2) Energy

Which sentence uses a verb that agrees with its subject? a. Is the boys coming over later to play basketball? b. Has he ever been there before? c. Were she h

Who is the prime minister of england

How were Loyalists treated by the Patriots during the war?

32 Equal amounts or ethanol and water are mixed at room temperature and at 101.3 kPa. Which process is used to separate ethanol from the mixture? (1) distillati

Which organelles are found in both plant and animal cells? a. lysosomes and cell membrane b. cell membrane and vacuole c. ribosomes and mitochondria d. cytop

whats a function of the cell membrane

Even though Alexandra could talk with her friends during dance class, she couldn't sing along to the songs. Which best describes her heart rate during this acti

What is one way that some bacteria are helpful to the human body? How do some bacteria harm the body?

how can adding doubles help you to multiply by 2? give an example.