jennydominguez0 jennydominguez0
  • 16-11-2017
  • Mathematics
contestada

A certain number added to its square is 30. Find the number.

Respuesta :

tgpatterson02
tgpatterson02 tgpatterson02
  • 16-11-2017
I got this:
5²+5=30

For the work, I just took the square I though was closest to 30, and added 5.

Hope this helps!
Answer Link
Rod44 Rod44
  • 16-11-2017
If the number is n, then n²+n=30, so n²+n-30=0=(n+6)(n-5) so there are two answers: 5 and -6.
Answer Link

Otras preguntas

what is a rational number between -1/6 and -2/6
what is E=m² the famous theory of albert einstien?
write a program in pascal to solve a quadratic equation
what is E=m² the famous theory of albert einstien?
I am a number between 500 and 600. My Ones digit is 5. My tens digit is the difference between my ones and hundreds digits. Who am i
Ned weighs 1.5 times as much as Jill and Tom weighs 15 kilograms more than Jill. If their combined weight is 190 kilograms, how much does each person weigh?
Ned weighs 1.5 times as much as Jill and Tom weighs 15 kilograms more than Jill. If their combined weight is 190 kilograms, how much does each person weigh?
what is a rational number between -1/6 and -2/6
Caitlyn did 6/7 of the problems on her math correctly and 4 incorrectly. She did all the problems. How many were there?
Peter jogged 96 yards in 40 seconds? What is his speed in feet per second?