nikkiCloud nikkiCloud
  • 04-06-2019
  • Mathematics
contestada

6 more than 3 times what number squares is 81

Respuesta :

RussianGuy
RussianGuy RussianGuy
  • 04-06-2019
When you write that equation, you get 3x^2+6=81.

Solving for x:

Subtract by 6 on both sides of the equation to get 3x^2=75.

Then, divide by 3 on both sides of the equation to get x^2=25.

Finally, do the square root on both sides of the equation to get x=5.

The number is 5.
Answer Link

Otras preguntas

The illegal and unethical practice of providing old (or early) investors above-average returns on their investment with funds raised from new (or late) investor
This was a representation or picture of a scared Christian personage. O A. delphi OB. erechtheion O c. icon OD. temple of Apollo
1. Compare Nya and Salva. Use the double bubble map you created Monday.
umm covalent bond are real hard for me.
which problem situation corresponds the equation 12.5 + x = 62.5 i need help please!!!!!
If it takes 7 minutes to label and cap 60 bottles, how long will it take to do 480 bottles?
2c = 112 A. c = 2 B. c = 42 C. c = 56 D. C = 224
what is the domain and range?
It is 10:00 in the morning, and Wendy is late for school. She is currently running north at a speed of 5 meters per second and is 2 miles south of her school. W
Please help me solve for x