McKenzie34
McKenzie34 McKenzie34
  • 04-09-2018
  • Mathematics
contestada

4y^2 + 2 =38
Help with work would be greatly appreciated

Respuesta :

TheBreeze
TheBreeze TheBreeze
  • 04-09-2018

4y^2 + 2 - 2 = 38 - 2 (subtract both side by 2)

4y^2 = 36

Divide by 4:

y^2 = 9

y = [tex] \sqrt{9}[/tex]

y = 3

Answer Link
AnimeBrainly
AnimeBrainly AnimeBrainly
  • 04-09-2018

Note the equal sign. What you do to one side, you do to the other. Do the opposite of PEMDAS.

First, subtract 2 from both sides

4y² + 2 (-2) = 38 (-2)

4y² = 38 - 2

4y² = 36

Next, divide 4 from both sides

(4y²)/4 = (36)/4

y² = 36/4

y² = 9

Finally, root both sides to fully isolate the y.

√y² = √9

y = √9

√9 = √3 x √3 = 3

y = 3

3 is your answer for y

hope this helps

Answer Link

Otras preguntas

PLEASE HELP ME WITH THIS PROBLEM ASAP!!!
4^3/4 x 2^x = 16^2/5 work out the exact value of x
Subtract -134 from the sum of 38 and -87.
1. What experience do you have with dramas (plays)? Have you seen any live? If so, what were they? 2. Are you familiar with any works of American Drama? 3. What
Is this figure an example of a line
Name one thing this city has that is special. Describe it using adjectives. (Hua-Hin Thailand)​
PLs answer ASAP will make you brainlist
Explanation please!!!
The bottom cup in a 73 cm tall stack of nested identical cups is 10 cm tall. If each additional cup adds 1.5 cm to the height of the stack, how many total cups
1.) Which movie had the Lower Q3 as shown in the box plot? Movie A Movie B Both about the same