Answer: The answer is 14
Step-by-step explanation: So, for every 5 books she gets, she gets two free. Here is a chart
5 books bought=2 free books
10 books bough=4 free books
15 books bought=6 free books
20 books bought=8 free books
25 books bought=10 free books
30 books bought=12 free books
35 books bought=14 free books
Every five books bought equals two free books, so if she buys 35 she would get 14, so 49 books in all. hope this helps :)
Answer:
3
Step-by-step explanation:
system of equations:
![a+b=4](https://tex.z-dn.net/?f=a%2Bb%3D4)
![a^3+b^3=28](https://tex.z-dn.net/?f=a%5E3%2Bb%5E3%3D28)
![a=4-b](https://tex.z-dn.net/?f=a%3D4-b)
plug in for a in other equation and solve
![(4-b)^3+b^3=28](https://tex.z-dn.net/?f=%284-b%29%5E3%2Bb%5E3%3D28)
![64-48b+12b^2-b^3+b^3=28](https://tex.z-dn.net/?f=64-48b%2B12b%5E2-b%5E3%2Bb%5E3%3D28)
![64-48b+12b^2=28](https://tex.z-dn.net/?f=64-48b%2B12b%5E2%3D28)
![0=36-48b+12b^2](https://tex.z-dn.net/?f=0%3D36-48b%2B12b%5E2)
![0=3-4b+b^2](https://tex.z-dn.net/?f=0%3D3-4b%2Bb%5E2)
![0=(b-3)(b-1)](https://tex.z-dn.net/?f=0%3D%28b-3%29%28b-1%29)
![b = 3](https://tex.z-dn.net/?f=b%20%3D%203)
or
![b=1](https://tex.z-dn.net/?f=b%3D1)
plug into other equation to get a
![a=4-b=4-3=1](https://tex.z-dn.net/?f=a%3D4-b%3D4-3%3D1)
or
![a=4-b=4-1=3](https://tex.z-dn.net/?f=a%3D4-b%3D4-1%3D3)
multiply together
![1*3=3](https://tex.z-dn.net/?f=1%2A3%3D3)
Answer:
no one
Step-by-step explanation:
because its so difcult bro
Answer:
x=76°
Step-by-step explanation:
BD║XY 76°=x