<em><u>answers</u></em>
y=2×2+3×-1 and x+ y= -1
Step-by-step explanation:
y =2×2+3x-1and x + y =1y= -2×2+3x-7 and x+y=-2x3x-1and x+y =-1
Formula to calculate it is simple:
<span>
![v=\frac{s}{t}](https://tex.z-dn.net/?f=v%3D%5Cfrac%7Bs%7D%7Bt%7D)
where v is the speed, s-road, t-time
Speed is equal to the ratio of road to czau estimated driving:
</span>
![65=\frac{390}{t}|*t](https://tex.z-dn.net/?f=65%3D%5Cfrac%7B390%7D%7Bt%7D%7C%2At)
![65t=390|:65](https://tex.z-dn.net/?f=65t%3D390%7C%3A65)
![t=\frac{390}{65}](https://tex.z-dn.net/?f=t%3D%5Cfrac%7B390%7D%7B65%7D)
![t=6](https://tex.z-dn.net/?f=t%3D6)
The car was for 6 hours.
Answer: The required inequality would be ![\dfrac{d}{55}+3.5\leq 8](https://tex.z-dn.net/?f=%5Cdfrac%7Bd%7D%7B55%7D%2B3.5%5Cleq%208)
Step-by-step explanation:
Since we have given that
Time should be no more than 8 hours in one day.
He already drive for = 3.5 hours
Average rate of driving = 55 miles per hour
So, distance would be
![d=speed\times time\\\\d=55\times t\\\\\dfrac{d}{55}=t](https://tex.z-dn.net/?f=d%3Dspeed%5Ctimes%20time%5C%5C%5C%5Cd%3D55%5Ctimes%20t%5C%5C%5C%5C%5Cdfrac%7Bd%7D%7B55%7D%3Dt)
So, the required inequality would be
![\dfrac{d}{55}+3.5\leq 8](https://tex.z-dn.net/?f=%5Cdfrac%7Bd%7D%7B55%7D%2B3.5%5Cleq%208)
Answer:
72
Step-by-step explanation:
3×(8×9/3=X1/3) then 8×9=X, then X=72
You have to take 180 degrees and subtract it from 142 degrees because that’s how long the line is
So that will leave you with 30 degrees
Answer: 38 degrees