Answer:
PR = 34.4
Step-by-step explanation:
x/54 = 7/11
11x = 378
x = 34.4
Answer:
Step-by-step explanation:
Answer:
x=-3
Step-by-step explanation:
2x+4=x+1
-x -x
x+4=1
-4 -4
x=-3
Answer:
22 miles per hour
Step-by-step explanation:
we know that
The speed is the ratio of distance by the time
Let
d -----> distance in feet
t ----> time in seconds
s ----> the speed in ft/sec
![s=\frac{d}{t}](https://tex.z-dn.net/?f=s%3D%5Cfrac%7Bd%7D%7Bt%7D)
we have
![d=100\ ft\\t=3.1\ sec](https://tex.z-dn.net/?f=d%3D100%5C%20ft%5C%5Ct%3D3.1%5C%20sec)
substitute
![s=\frac{100}{3.1}](https://tex.z-dn.net/?f=s%3D%5Cfrac%7B100%7D%7B3.1%7D)
![s=32.26\frac{ft}{sec}](https://tex.z-dn.net/?f=s%3D32.26%5Cfrac%7Bft%7D%7Bsec%7D)
Remember that
![1\ mi=5,280\ ft](https://tex.z-dn.net/?f=1%5C%20mi%3D5%2C280%5C%20ft)
![1\ h=3,600\ sec](https://tex.z-dn.net/?f=1%5C%20h%3D3%2C600%5C%20sec)
Convert ft/sec to mi/h
![s=32.26\frac{ft}{sec}=32.26\frac{(1/5,280)}{(1/3,600)}=32.26(\frac{3,600}{5,280})=22\ \frac{mi}{h}](https://tex.z-dn.net/?f=s%3D32.26%5Cfrac%7Bft%7D%7Bsec%7D%3D32.26%5Cfrac%7B%281%2F5%2C280%29%7D%7B%281%2F3%2C600%29%7D%3D32.26%28%5Cfrac%7B3%2C600%7D%7B5%2C280%7D%29%3D22%5C%20%5Cfrac%7Bmi%7D%7Bh%7D)
Answer:
Step-by-step explanation:
y-intercept is -4