teagan4christ
teagan4christ teagan4christ
  • 08-02-2017
  • Mathematics
contestada

solve for x.
5x to the second power -80=0

A. {16}
B. {4}
C. {4 , -4}
D. {16 , -16}

Respuesta :

texaschic101
texaschic101 texaschic101
  • 08-02-2017
5x^2 - 80 = 0
5x^2 = 80
x^2 = 80/5
x^2 = 16
x = sqrt 16
x = (4,-4) <===

Answer Link

Otras preguntas

What is 1/2 plus 1/5
(Alter) when she saw that it was going to rain,
Caitlin did 3/5 of the problems on her math test correctly and eight incorrectly. She did all the problems how many problems were there?.. How do you answer thi
What is 67,234.63992 rounded to the nearest thousandth
6x-9x-4 = -2x-2 What is x?
A rectangular athletic field is twice as long as it is wide. If the perimeter of the athletic field is 216 yards, what are its dimensions? What is the width?
What are the 3 characteristics of a good math explanation?
the code of hammurabi can be best described as
At the pet fair, Darlenes dog weighed 5 times as much as leah's dog Together the dogs weighted
2 minus 4 plus 6 divide 3