Answer:
dont know
Step-by-step explanation:
welcome to 2021
x=12
x/16-1-4=1/2
multiply by both sides
x-4=8
move constant to the right side of and change its sign
x=8+4
add the numbers
x=12
The solution to the equation of the indicated variable is:
![\mathbf{e = \dfrac{d}{3f^2}}](https://tex.z-dn.net/?f=%5Cmathbf%7Be%20%3D%20%5Cdfrac%7Bd%7D%7B3f%5E2%7D%7D)
In an equation, solving for a variable implies that we make that variable we are to solve the subject of the formula and relate it to the rest of the variables present in the equation.
Given that:
d = 3ef^2
The first step would be to divide both sides by e:
![\mathbf{\dfrac{d}{e} = \dfrac{3ef^2}{e}}](https://tex.z-dn.net/?f=%5Cmathbf%7B%5Cdfrac%7Bd%7D%7Be%7D%20%3D%20%5Cdfrac%7B3ef%5E2%7D%7Be%7D%7D)
![\mathbf{\dfrac{d}{e} = 3f^2}}](https://tex.z-dn.net/?f=%5Cmathbf%7B%5Cdfrac%7Bd%7D%7Be%7D%20%3D%203f%5E2%7D%7D)
![\mathbf{\dfrac{1}{e} = \dfrac{3f^2}{d}}](https://tex.z-dn.net/?f=%5Cmathbf%7B%5Cdfrac%7B1%7D%7Be%7D%20%3D%20%5Cdfrac%7B3f%5E2%7D%7Bd%7D%7D)
![\mathbf{e^{-1} = \dfrac{3f^2}{d}}](https://tex.z-dn.net/?f=%5Cmathbf%7Be%5E%7B-1%7D%20%3D%20%5Cdfrac%7B3f%5E2%7D%7Bd%7D%7D)
![\mathbf{e^{-1\times (-1)} =\Big( \dfrac{3f^2}{d}\Big)^{-1}}](https://tex.z-dn.net/?f=%5Cmathbf%7Be%5E%7B-1%5Ctimes%20%28-1%29%7D%20%3D%5CBig%28%20%5Cdfrac%7B3f%5E2%7D%7Bd%7D%5CBig%29%5E%7B-1%7D%7D)
![\mathbf{e = \dfrac{d}{3f^2}}](https://tex.z-dn.net/?f=%5Cmathbf%7Be%20%3D%20%5Cdfrac%7Bd%7D%7B3f%5E2%7D%7D)
Learn more about variables here:
brainly.com/question/3766847
Answer: She jump ropes 7/3 or 2 1/3 of an hour every week
Step-by-step explanation: This is because she jump ropes 1/3 each day and there's 7 days in a week so 7/3 or 2 1/3(2 hours and 20 minutes)
I hope you are having a nice day!