Answer:
The value of ![gof (-2)=79](https://tex.z-dn.net/?f=gof%20%28-2%29%3D79)
Step-by-step explanation:
We have
![f(x) = x^2 -5x +1 \\\\f(-2) = (-2)^2 -5\times-2 +1 \\\\=15](https://tex.z-dn.net/?f=f%28x%29%20%3D%20x%5E2%20-5x%20%2B1%20%5C%5C%5C%5Cf%28-2%29%20%3D%20%28-2%29%5E2%20-5%5Ctimes-2%20%2B1%20%5C%5C%5C%5C%3D15)
Now we need to find
![gof (-2)=g(15)](https://tex.z-dn.net/?f=gof%20%28-2%29%3Dg%2815%29)
![g(15) =5\times15+4\\\\=79](https://tex.z-dn.net/?f=g%2815%29%20%3D5%5Ctimes15%2B4%5C%5C%5C%5C%3D79)
Answer:
68.8 metres
Step-by-step explanation:
First, you are given the area of a square, which is 295.84 m^2. The formula for an area of a square is Area =
, where s is the length of one side of the square.
So, if you know that the area of the square is 295.84, you can find the length of one side.
Area = ![s^{2}](https://tex.z-dn.net/?f=s%5E%7B2%7D)
295.84 = ![s^{2}](https://tex.z-dn.net/?f=s%5E%7B2%7D)
To solve for s, you can square root each side.
= 17.2, so the length of one side of a square is 17.2 metres.
To get the perimeter, all you have to do is multiply the length of one side of the square by 4, since a square has 4 equal sides.
So, 4 x 17.2 = 68.8 metres.
Answer:
14.5 hours/14 hours 30 minutes
Step-by-step explanation:
- The distance between the two cities is 7.25•100=725 because you multiply the scale distance by the scale.
- The number hours is 725/50=14.5 hours because you divide the distance by 50 (the miles per hour).