Answer:
So for Biker A for every 2 hrs they drive 50 km
For Biker B for every 3 hrs they drive 72 km
Step-by-step explanation:
so for every hour biker A rides 25 km
but for biker B they ride 24 km
To find out how much he makes per week, take the amount and divide it by the week.
1520/4=380.
He makes 380 per week.
Answer: ![(12,-3)\ \text{or}\ (3,-12)](https://tex.z-dn.net/?f=%2812%2C-3%29%5C%20%5Ctext%7Bor%7D%5C%20%283%2C-12%29)
Step-by-step explanation:
Given
The product of integers is -36
The difference of integers is 15
Suppose the integers are x and y
![\Rightarrow x-y=15\\\Rightarrow x=15+y\\\Rightarrow xy=-36](https://tex.z-dn.net/?f=%5CRightarrow%20x-y%3D15%5C%5C%5CRightarrow%20x%3D15%2By%5C%5C%5CRightarrow%20xy%3D-36)
Put the value of
in the product
![\Rightarrow (15+y)y=-36\\\Rightarrow 15y+y^2+36=0\\\Rightarrow y^2+12y+3y+36=0\\\Rightarrow y(y+12)+3(y+12)=0\\\Rightarrow (y+12)(y+3)=0\\\Rightarrow y=-3\ \text{or}\ -12](https://tex.z-dn.net/?f=%5CRightarrow%20%2815%2By%29y%3D-36%5C%5C%5CRightarrow%2015y%2By%5E2%2B36%3D0%5C%5C%5CRightarrow%20y%5E2%2B12y%2B3y%2B36%3D0%5C%5C%5CRightarrow%20y%28y%2B12%29%2B3%28y%2B12%29%3D0%5C%5C%5CRightarrow%20%28y%2B12%29%28y%2B3%29%3D0%5C%5C%5CRightarrow%20y%3D-3%5C%20%5Ctext%7Bor%7D%5C%20-12)
![\therefore x=12\ \text{or}\ 3](https://tex.z-dn.net/?f=%5Ctherefore%20x%3D12%5C%20%5Ctext%7Bor%7D%5C%203)
Pairs of integers are ![(12,-3)\ \text{or}\ (3,-12)](https://tex.z-dn.net/?f=%2812%2C-3%29%5C%20%5Ctext%7Bor%7D%5C%20%283%2C-12%29)
Answer:
Gretchen because a 1/5 is bigger than 1/8 so 3/5 is bigger than 3/8