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

How many times dose six go into one hundred
V) The following passage has not been edited. There is one error in each line. Write the incorrect word and the correction against the correct question number.
What was George Washington’s fears about political parties and how did his selection of Alexander Hamilton and Thomas Jefferson to his Cabinet address those fe
Question 6 (5 points) What views are being communicated about the Europeans (the people around the table) in their role as imperialists?
What is the perimeter of this square?​
If x^4 + y^4 =83x^2y^2 then prove that log (x^2/9-y^2/9)= log x+ logy
Which equation has the same solutions as the equation given below? x^2 +18x+32=0 A. (x+4)^2=81 B. (x+9)^2=49 C. (x+6)^2=36 D. (x+2)^2=16
Why does chromatic aberration occur? Please use 3 content related sentences.
Eating protein regularly is of utmost importance because
name the three co operative which ensure food security