Answer:
![x^{2} +x-4](https://tex.z-dn.net/?f=x%5E%7B2%7D%20%2Bx-4)
Step-by-step explanation:
To get the answer just subtract f(x) by g(x)
The work is shown below:
![(f-g)(x)= f(x)-g(x)\\\\(f-g)(x)= (x^{2} +1)-(5-x)\\\\(f-g)(x)= x^{2} +1-5+x\\\\(f-g)(x)= x^{2} -4+x\\\\(f-g)(x)= x^{2} +x-4\\\\](https://tex.z-dn.net/?f=%28f-g%29%28x%29%3D%20f%28x%29-g%28x%29%5C%5C%5C%5C%28f-g%29%28x%29%3D%20%28x%5E%7B2%7D%20%2B1%29-%285-x%29%5C%5C%5C%5C%28f-g%29%28x%29%3D%20x%5E%7B2%7D%20%2B1-5%2Bx%5C%5C%5C%5C%28f-g%29%28x%29%3D%20x%5E%7B2%7D%20-4%2Bx%5C%5C%5C%5C%28f-g%29%28x%29%3D%20x%5E%7B2%7D%20%2Bx-4%5C%5C%5C%5C)
Answer:
4.9=4.2
Step-by-step explanation:
Answer:
thanks
Step-by-step explanation:
The length of hours Gilbert drove is 7.5 hours.
The length of hours Brian drove is 4.1 hours.
<u>Step-by-step explanation</u>:
- Gilbert averaged = 45 miles per hour
- Brain averaged = 65 miles per hour
- Total hours = 11.6 hours
- Total distance = 604 miles
Let 'x' be the hours Gilbert drove.
Let 'y' be the hours Brian drove.
x+y = 11.6 -----(1)
45x+65y = 604 -----(2)
Multiply (1) by 45 and subtract (2) from (1)
45x+45y = 522
-(<u>45x+65y = 604</u>)
<u> -20y = -82 </u>
y = 82/20
y = 4.1 hours
The length of hours Brian drove = 4.1 hours
Substitute y=4.1 in (1)
x+4.1 = 11.6
x = 7.5 hours
The length of hours Gilbert drove = 7.5 hours