Friday

September 19, 2014

September 19, 2014

Posted by **jason** on Monday, September 3, 2012 at 1:41am.

- algebra -
**KokkoDeRas**, Monday, September 3, 2012 at 8:12ami set the equation end give you the solutions but you try to get there

x=first test, y=second test z= three test

i)second test score was 8 points higher than her first score => y=x+8

ii)Her third score was 88=> z=88

iii)B average (between 80=> B=(x+y+z)/3<80

iiii)B average...and 89 inclusive)=> B=(x+y+z)/3>89

advice: replace i and ii in disequations iii and iiii

solution x>72 x<85,50

- algebra -
**KokkoDeRas**, Monday, September 3, 2012 at 8:16amsorry.....errata corrige:

iii)B average (between 80=> B=(x+y+z)/3>80

iiii)B average...and 89 inclusive)=> B=(x+y+z)/3<89

**Answer this Question**

**Related Questions**

stats - 2. A standardized exam was provided to all 3rd graders in Arizona ...

college algebra - Sally took four tests in science class. On each successive ...

statistics probability - Alice earned a score of 940 on an IQ test.The mean test...

Statistics - In your biology class, your final grade is based on several things...

math - on her first two math tests, Gracie has an average score of 86. If she ...

statistics - Ram earned a score of 940 on a national achievement test. The mean ...

statistics - It is known that the population mean for the Quantitative section ...

algebra data analysis - kenneth has a mean score of 8 points in the first three ...

math,correction - can someone correct this for me please. Statistics. Sam must ...

math correction - can someone correct this for me.or teach me if i'm wrong ...