sistersbypride sistersbypride

08-11-2018
Mathematics

contestada

find the solutions to the equation below check all that apply
9x^2-81=0

A. x=9
B. x=1
C. x=-9
D. x=-3
E. x=3
F. x=-81

Respuesta :

wegnerkolmp2741o wegnerkolmp2741o

08-11-2018

9x^2-81=0

add 81 to each side

9x^2 = 81

divide by 9

x^2 =9

take the square root of each side

x = + - sqrt (9)

x=+3,-3

Choices D,E

Answer Link

Otras preguntas

According to learning theory, moral behavior is learned best through reinforcement and exposure to higher order reasoning.a. trueb. false

What does OLED stand for? 1) Organic Light-Emitting Diode 2) Optical Light-Emitting Diode 3) Oxygen Light-Emitting Diode 4) Oscillating Light-Emitting Diode

Explain who or what “She” might be

The diagonal of rectangle is Bem long and make an angle 35 with one it’s 1

Write the function so the x(t) component contains a cos(t) term.a) x(t) = cos(t)b) x(t) = t cos(t)c) x(t) = cos²(t)d) x(t) = sin(t) cos(t)

After controlling for Z a researcher finds evidence of a spurious relationship between X and Y. What step should be taken next?a. Z should become the new indepe

Make v the subject of c=my+y/v

Explain why the Calvin cycle and the pentose phosphate are almost mirror images of each other.

Use a graphing calculator to find an equation of the line of best fit for the data shown below. (Type your answer without spaces, using two decimal places for s

What did the Confederate government offer the Native Americans that the federal government had never offered?

good job