The one that does not belong to Julie
The first person who calculated pi was <span>Archimedes got really close however with the mathematics he had in his time he did not have decimal points nor could he use the number 0. So it has to latter once people recognize 0 as a number and the decimal point that we get what we have today. </span><span />
what kind of car is this ?
We break down the area into two triangles - since we're given all their side lengths, we use Heron's formula:
where 
![[ABD]=\sqrt{(265)(115)(85)(65)}\approx 12975.92](https://tex.z-dn.net/?f=%5BABD%5D%3D%5Csqrt%7B%28265%29%28115%29%2885%29%2865%29%7D%5Capprox%2012975.92)
![[CBD]=\sqrt{(225)(125)(75)(25)}\approx 7261.84](https://tex.z-dn.net/?f=%5BCBD%5D%3D%5Csqrt%7B%28225%29%28125%29%2875%29%2825%29%7D%5Capprox%207261.84)
![[ABCD]=[ABD]+[CBD]\approx\boxed{20238\,\text{m}^2}.](https://tex.z-dn.net/?f=%5BABCD%5D%3D%5BABD%5D%2B%5BCBD%5D%5Capprox%5Cboxed%7B20238%5C%2C%5Ctext%7Bm%7D%5E2%7D.)
Answer:
1. (x+2y)^2-ab x^2+4xy+4y^2-ab
2. 3n-13<9 n<22/3
3. 6+n/7=4 n/7=-2