Answer: 20.2 mph
Step-by-step explanation:
Given
Train travels 10.1 miles in half an hour i.e.
Distance ![d=10.1\ \text{miles}](https://tex.z-dn.net/?f=d%3D10.1%5C%20%5Ctext%7Bmiles%7D)
time ![t=0.5\ hr](https://tex.z-dn.net/?f=t%3D0.5%5C%20hr)
we know, ![\text{distance=speed}\times\text{time}](https://tex.z-dn.net/?f=%5Ctext%7Bdistance%3Dspeed%7D%5Ctimes%5Ctext%7Btime%7D)
Insert the values
![\Rightarrow 10.1=v\times 0.5\\\Rightarrow v=20.2\ mph](https://tex.z-dn.net/?f=%5CRightarrow%2010.1%3Dv%5Ctimes%200.5%5C%5C%5CRightarrow%20v%3D20.2%5C%20mph)
Remember P.E.M.D.A.S
57 - 12 ÷ 4 · 3
= 57 - 3 · 3
= 57 - 9
= 48
Answer:
Polynomial equation solver
x-3=3x-2
Standard form:
−2x − 1 = 0
Factorization:
−(2x + 1) = 0
Solutions:
x = −1
2
= -0.5