Answer:
23
Step-by-step explanation:
Answer:
C. 0 ≤ y ≤ 7
Step-by-step explanation:
Range is the interval of the numbers on the y-axis. The numbers go from y-value 1 to y-value 7. Since the circles at the ends are closed, this means 0 and 7 are included in the range, so ≤ is included instead of <.
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:
Yes.
Step-by-step explanation:
A quadrilateral is any polygon with four sides. A rectangle, by definition, is a polygon with four sides and four right angles. Thus, every rectangle is a quadrilateral.