I agree with the first answer posted
The correct option is first option: x=t(y-4f)
Further explanation:
Given equation is:
![\frac{x}{t}+4f=y](https://tex.z-dn.net/?f=%5Cfrac%7Bx%7D%7Bt%7D%2B4f%3Dy)
In order to solve the equation for x, we have to isolate x on one side of the equation
Using Subtraction property of equality
Subtracting 4f from both sides
![\frac{x}{t}+4f-4f=y-4f\\\frac{x}{t}=y-4f](https://tex.z-dn.net/?f=%5Cfrac%7Bx%7D%7Bt%7D%2B4f-4f%3Dy-4f%5C%5C%5Cfrac%7Bx%7D%7Bt%7D%3Dy-4f)
Multiplication property of equality
Multiplying both sides by t
![\frac{x}{t}*t=t(y-4f)\\x=t(y-4f)](https://tex.z-dn.net/?f=%5Cfrac%7Bx%7D%7Bt%7D%2At%3Dt%28y-4f%29%5C%5Cx%3Dt%28y-4f%29)
Hence, the correct option is first option: x=t(y-4f)
Keywords: Linear equation, Equation solution
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Answer with explanation:
Relation between Speed , Distance and time
Distance =Speed × Time
→It means Speed is inversely Proportional to time.
As distance will remain constant , in that frame of reference
If speed of light in a Medium
![=s=3 \times 10^8 \frac{\text{meter}}{\text{second}}](https://tex.z-dn.net/?f=%3Ds%3D3%20%5Ctimes%2010%5E8%20%5Cfrac%7B%5Ctext%7Bmeter%7D%7D%7B%5Ctext%7Bsecond%7D%7D)
Then, time taken to cross the medium = t seconds or hours or another unit of time.
Now, If speed of light is 50% of the speed of light relative to us
That is Speed of light in another medium
![=w=\frac{50}{100} \times 3 \times 10^8\\\\=1.5 \times 10^8 \frac{\text{meter}}{\text{second}}](https://tex.z-dn.net/?f=%3Dw%3D%5Cfrac%7B50%7D%7B100%7D%20%5Ctimes%203%20%5Ctimes%2010%5E8%5C%5C%5C%5C%3D1.5%20%5Ctimes%2010%5E8%20%5Cfrac%7B%5Ctext%7Bmeter%7D%7D%7B%5Ctext%7Bsecond%7D%7D)
Then, time taken to cross the medium = 2t seconds or hours or another unit of time.
Using Unitary Method
![\rightarrow v_{1}\times t_{1}=v_{2} \times t_{2}\\\\1.\rightarrow 3 \times 10^8 \times t=\frac{50}{100} \times 3 \times 10^8 \times t_{1}\\\\t_{1}=2t\\\\2.\rightarrow 3 \times 10^8 \times t=\frac{99.5}{100} \times 3 \times 10^8 \times t_{2}\\\\t_{2}=\frac{1000t}{995}\\\\t_{2}=\frac{200t}{199}](https://tex.z-dn.net/?f=%5Crightarrow%20v_%7B1%7D%5Ctimes%20t_%7B1%7D%3Dv_%7B2%7D%20%5Ctimes%20t_%7B2%7D%5C%5C%5C%5C1.%5Crightarrow%203%20%5Ctimes%2010%5E8%20%5Ctimes%20t%3D%5Cfrac%7B50%7D%7B100%7D%20%5Ctimes%203%20%5Ctimes%2010%5E8%20%5Ctimes%20t_%7B1%7D%5C%5C%5C%5Ct_%7B1%7D%3D2t%5C%5C%5C%5C2.%5Crightarrow%203%20%5Ctimes%2010%5E8%20%5Ctimes%20t%3D%5Cfrac%7B99.5%7D%7B100%7D%20%5Ctimes%203%20%5Ctimes%2010%5E8%20%5Ctimes%20t_%7B2%7D%5C%5C%5C%5Ct_%7B2%7D%3D%5Cfrac%7B1000t%7D%7B995%7D%5C%5C%5C%5Ct_%7B2%7D%3D%5Cfrac%7B200t%7D%7B199%7D)
Answer:
If the shape is a square, then it is a rectangle
Step-by-step explanation:
Conditional is if-then
Answer:
X= 16
Step-by-step explanation:
Espero que mi respuesta te ayude.