That’s a spam don’t do it
Answer:
The approximate measure of the largest angle formed by these streets is 
Step-by-step explanation:
we know that
Applying the law of cosines

In this problem we have


----> is the greater side
substitute and solve for angle C


![cos(C)=[152,500-176,400]/150,000](https://tex.z-dn.net/?f=cos%28C%29%3D%5B152%2C500-176%2C400%5D%2F150%2C000)


![\bf \cfrac{(a-3)\left( \frac{a}{3}+1 \right)}{\frac{1}{3}}\implies 3\left[ (a-3)\left( \frac{a}{3}+1 \right) \right] \\\\\\ 3\left[\frac{a^2}{3}+a-a-3 \right]\implies 3\left[\frac{a^2}{3}-3 \right]\implies a^2-9](https://tex.z-dn.net/?f=%20%5Cbf%20%5Ccfrac%7B%28a-3%29%5Cleft%28%20%5Cfrac%7Ba%7D%7B3%7D%2B1%20%5Cright%29%7D%7B%5Cfrac%7B1%7D%7B3%7D%7D%5Cimplies%203%5Cleft%5B%20%28a-3%29%5Cleft%28%20%5Cfrac%7Ba%7D%7B3%7D%2B1%20%5Cright%29%20%5Cright%5D%20%5C%5C%5C%5C%5C%5C%203%5Cleft%5B%5Cfrac%7Ba%5E2%7D%7B3%7D%2Ba-a-3%20%20%5Cright%5D%5Cimplies%203%5Cleft%5B%5Cfrac%7Ba%5E2%7D%7B3%7D-3%20%20%5Cright%5D%5Cimplies%20a%5E2-9%20)
when you have polynomials multiplication, say (x+y) (a+b+c), you can always just multiply x(a+b+c) + y(a+b+c), namely each term by all others and sum them up, like above.
We're willing, but sadly not able.
Here's are the other things we'll need before we can attack this one:
1). We need to know how often does Ned swim ?
2). We need to know how often does Ned bicycle ?
3). We need to see that "chart below".
The only thing I see below right now is my dog.