Which should be the first step in solving the equation 1.2 w -3.8= 12.4 1. add 3.8 to both sides of the equation. 2. subtract 1.2 from both sides of the equation. 3. multiply both sides of the equation by 1.2. 4. divide both sides of the equation by 3.8.

Option 1 - Add 3.8 to both sides of the equation.            

Step-by-step explanation:

Given : Equation  

To find : Which should be the first step in solving the equation?

Solution :

Equation  

Step 1 - Adding 3.8 both side,

Step 2 - Divide 1.2 both side,

Therefore, The first step in solving the equation is 'Add 3.8 to both sides of the equation.'

So, Option 1 is correct.

give more details

step-by-step explanation:

yx = 36

step-by-step explanation:

cos f = opposite side/ hypotenuse

cos f = yw / yx

we know cos f = 4/9 and yw =16

4/9 = 16/yx

multiply each side by yx

4/9 yx = 16/ yx * yx

4/9 yx = 16

multiply each side by 9/4

9/4 * 4/9 yx = 16 *9/4

yx = 36