xineohp
xineohp xineohp
  • 21-05-2020
  • Mathematics
contestada


[tex] {20x}^{2} + 7x - 49[/tex]
Please solve for the value of x with explanation.​

Respuesta :

nktselepov
nktselepov nktselepov
  • 21-05-2020

[tex] {20x}^{2} + 7x - 49 = 0 \\ D = {7}^{2} - 4 \times 20 \times ( - 49) = 3969 = {63}^{2} \\ x_1 = \dfrac{ - 7 + 63}{40} = 1.4 \\ x_2 = \dfrac{ - 7 - 63}{40} = - 1.75[/tex]

Answer Link

Otras preguntas

why does music motivate you?
A carpenter designs a tabletop in the shape of a trapezoid. A trapezoid with base lengths of 2 feet and 5 feet, and height 3 feet. How much wood does the table
New question. There are five correct!
Why should a matriculant be aiming to achieve a bachelor's pass, regardless of what they plan for 2023 ?
Find the distance between the pair of points.(-5, -8) and (4,4). What is the distance?
Smooth muscles are involuntary. Do they benefit from exercise?
The starting and stopping point for Amir’s run this morning are 0.5 inch apart on the map. If each inch on the map represents 3 miles, how far did Amir run?
I need help with this whole page please.
Guys please help me out with this !What are the two types of nutrients ?Thank you​
Why should a prince not worry too much about “the stigma of cruelty”? How can being too compassionate actually be worse for the country? Source: Excerpt from th