Posted by **Ellie** on Sunday, September 18, 2011 at 2:57pm.

Please check answer and help with one of them:

1. check please

car in an accident speed of car is the s, d is length of skid=30 feet

f is coefficient=0.5

use formula to find

s=sqaure root of 30*f*d

My answer is 21.21 because I took square root of 30(0.5)(30)

2. this one is baffling to me-how do I do this one-3 times square root of (x+1) is less than or equal to 7 Please help-Thank you

## Answer this Question

## Related Questions

- Pre-Calc - Please check answer and help with one of them: 1. check please car in...
- Alg2 - Help w/Word Prob: LAW ENFORCEMENT A police accident investigator can use ...
- Algebra 2 - The Formula s= sqrt 30fd can be estimated the speed of s, in miles ...
- Math - The police can determine the speed a car was traveling from the length of...
- Algebra - The formula r=2sqrt(...)5L can be used to approximate the speed r, in ...
- Algebra - The formula r =2 sqrt.5L can be used to approximate the speed r, in ...
- algebra - Use the following situation to answer the next four questions. The ...
- math - Use the following situation to answer the next four questions. The ...
- math - Use the following situation to answer the next four questions. The ...
- math - When a car makes an emergency stop on dry road, it leaves skid marks. ...