Friday

October 24, 2014

October 24, 2014

Posted by **bianca** on Tuesday, February 22, 2011 at 7:19am.

To put this in algebriac equation would be

140+120=260*.80=208

120*97

208*97=111

120-X=81%

X=111

I know this is not a correct algebraic expression could you explain how to write this in correct algebraic expression. Thanks for your help

- algebra -
**Reiny**, Tuesday, February 22, 2011 at 9:10am.81(120) + x(140) = .80(260)

81(120) + 100x(140) = 80(260)

1400x = 11080

x = 11080/1400 = .7914

the student must earn 79% of 140 or 110.8 points in the second semester.

**Answer this Question**

**Related Questions**

Algebra - The final grade for a particular course is calculated by dividing ...

algebra - The final grade for a particular course is calculated by dividing ...

math - the final grade for a particular course is calculated by dividing total ...

Devry - 1. You are part of a team given the task of designing an application to ...

math, algebra - can someone correct this for me. Problem: A student is nearing ...

math - on 3 tests you earned grades of 88%,94%,and 90%. Each test worth 150 ...

linear equation - A financial advisor is about to build an investment portfolio ...

algebra - each week, mandy's algebra teacher gives a 10 point math quiz. after 5...

math - on 3 tests you earned grades of 88%,94%,and 90%. Each test was worth ...

math - please check my answer. each test is worth 100 points. the following test...