mysonisaplant mysonisaplant

13-06-2020
Mathematics

contestada

Astudent says that if 5x^2=20 then x must be equal to 2. Do you agree or disagree with the student? Justify your answer

Respuesta :

wegnerkolmp2741o wegnerkolmp2741o

13-06-2020

Answer:

disagree, x= 2 or -2

Step-by-step explanation:

5x^2 = 20

Divide each side by 5

5x^2/5 = 20/5

x^2 = 4

Take the square root of each side

sqrt(x^2) = ±sqrt(4)

x = ±2

X could be either 2 or -2

Answer Link

Otras preguntas

I HAVE A HUGE CHEMISTRY FINAL TOMORROW!! CAN ANYBODY HELP ME AND GIVE ME SOME FACTS AND STUFF??! I AM REALLY CONFUSED BY IT ALL! I JUST DON'T UNDERSTAND!! Ple

In order to become a better writer, you must read a. only novels. b. anything except magazines. c. only nonfiction. d. good writing.

Solve using the guess-and-check strategy. Matthew and Elizabeth have a combined age of 19 years. Matthew is 5 years older than Elizabeth. How old is Matth

Calculate and write your final answer in scientific notation: (5 x 103) (3.9 x 10-5)

A $104,000 selling price with $24,000 down at 8.5% for 25 years results in a monthly payment of?

Read the excerpt from It's Our World, Too!: Young People Who Are Making a Difference. Since that letter was read, there have been no more racial slurs from the

what is the answer of 21 + m = 33

Why is ecology important? What is its impact in today's world?

How is the Transitive Property of Parallel Lines similar to the Transitive Property of Congruence? How are they different?

Explain how color indicates the temperature of a star