yahoohollister
yahoohollister
06-01-2015
Mathematics
Answered
Wat is 7x² + 4x - 5= 0
Answer :
konrad509
konrad509
06-01-2015
[tex]7x^2+4x-5=0\\ \Delta=4^2-4\cdot7\cdot(-5)=16+140=156\\ \sqrt{\Delta}=\sqrt{156}=2\sqrt{39}\\ x=\dfrac{-4\pm2\sqrt{39}}{2\cdot7}=\dfrac{-2\pm\sqrt{39}}{7}[/tex]
Answer Link
Аноним
Аноним
06-01-2015
Answer and workings in the attachment below.
Answer Link
VIEW ALL ANSWERS ( 89+ )
Other Questions
What teaching do you need to provide Gail prior to her appointment?
5. Solve the system of equations:[tex]\[ y = 3x - 4 \][/tex][tex]\[ y = -\frac{1}{2}x + 3 \][/tex]
\begin{tabular}{|r|l|l|}\hlineReceived & & \\\hlineTotal & 62 & 23 \\\hline& & \\\hline\end{tabular}How much cash did the person who fil
Question 6 (Multiple Choice Worth 1 point)The following is a quote from a nationally televised address by President Ronald Reagan in 1987:"A few months ago, I t
6. What is the term for a method of registering one's creation so that it is legally protected from theft?A. MultimediaB. RelevantC. CredibleD. Copyright
How does Jamelle demonstrate appropriate behavior for participating in a formal discussion? Check all that apply.- He reviews the agenda for the group.- He came
The benefit of conducting an incident investigation is to:A. be in compliance with OSHA requirements.B. take the necessary disciplinary action.C. hold employees
List, define, and provide an example for each of the five components of a classical conditioning scenario:1. Unconditioned Stimulus (US) - Definition: A stimu
In relation to ready-to-eat foods, raw meat should be stored in which position?A. AboveB. BelowC. BesideD. Centrally
Solve the following inequality:[tex]\[ 3n + 8 \geq 35 \][/tex]
What is k+3 3/4 = 5 2/3 - 1 1/3
What is k+3 3/4 = 5 2/3 - 1 1/3
10% of what number is 14?
explain how humans have impacted the biome in which you live which is missouri
Systems of equations word problem. "Flying with the wind a plane went 183 km/h. Flying into the same wind the plane only went 141 km/hr. Find the speed of the p
The perimeter of a parallelogram is 72 inches, and 1 side measures 12 inches. What are the lengths, in inches, of the other 3 sides? A. 12, 12, 36 B. 12, 18, 18
If the length of a rectangle is increased by 120 %, and its width is decreased by 20%, what happens to the area of the rectangle?
Passage of the Twelfth Amendment was a direct result of the (A) controversy that arose when the election of 1824 was settled in the House of Representatives (B)
Determine if the following are autotrophs or heterotrophs: (a) a giant redwood tree, (b) a spider, (c) a rose bush, (d) a mushroom, (e) a blue whale.
Determine if the following are autotrophs or heterotrophs: (a) a giant redwood tree, (b) a spider, (c) a rose bush, (d) a mushroom, (e) a blue whale.