cheesedoodle
cheesedoodle cheesedoodle
  • 24-03-2019
  • Mathematics
contestada

What is the value of y? 3y^2 − 6 = 42

Respuesta :

Mistystar4881
Mistystar4881 Mistystar4881
  • 24-03-2019

Hey there!

Let's start by adding 6 to both sides of the equation to eliminate the -6.

3y^2 = 48

Next, let's divide both sides by 3 to eliminate the 3.

y^2 = 16

Find the square root of both sides.

y = ±4

It can be both positive or negative 4 because -4 x -4 and 4 x 4 both equal 16.

The value of y is ±4.

Hope this helps!

Answer Link

Otras preguntas

What are the settlement patterns of South America in terms of the interior and the coast?(This question is in my world geography class pls help)
How do social expectations and stereotypes about gender and sexuality influence how a person may feel about their gender identity
Using the information provided, analyze the affects of Lawry Lawn Service's transactions on the accounting equation. May 1 Received $3,400 and issued common sto
If 40 percent of the eggs were cracked what fraction of the eggs were cracked
is this right if not please tell me the right answer
Giving brainliest!! Pls heeelllpppp
Work out value x 4x 5x angles
You are saving money for a down payment on a new house. You intend to place $7,500 at the end of each year for three years into an account earning 5% per year.
At the equator, the earth spins a distance of 25,992 miles every day. What speed does the earth spin at in mph?
find the equation of circle touches x axis at 3,0 and through the point 1,2​