Sunday

January 25, 2015

January 25, 2015

Posted by **confused....** on Saturday, September 8, 2007 at 2:22pm.

If y # y = 2x + 3y and x * y = 5x + 4y, evaluate the expression 2 # (4 * 3).

Please help! Try to explain how I should solve these - don't just give me the answer. These problems showed up in my math book, and my teacher didn't teach us how to do those in the lesson. And, first of all, what does # mean in a problem like this? Thank you.

- Advanced Math I -
**bobpursley**, Saturday, September 8, 2007 at 3:24pm4*3=4-3*3=-5 according to the rules.

-5#5= 2*-5 + 3*5 or 5 according to the rules.

# is the symbol for an unknown math operator, defined as a#b=2a + 3b

- Advanced Math I -
**confused...**, Monday, September 10, 2007 at 3:48pmhmm...interesting. sorry to say, I still don't get this! thank you for your help, though, Bob.

my math teacher ending up explaining this today (after he took a homework completion grade - of course I hadn't been able to do the problem!)and then I just checked and read your explanation, and I still don't get it. can somebody please help?

**Answer this Question**

**Related Questions**

6th grade advanced math - 1) -/-3/____ -3 //= what's the absulute value of. In ...

math 115 - 1. divide 36/-4= 9 is this correct? 2. evaluate the expression |-5 +3...

math 115 - 1. evaluate exactly square root 100- square root64 = 10- 8 = 2 is ...

Evaluate the expression.Algebra - Evaluate the expression. (9/6) (6/4) (3/1) I ...

Math - Write an algebraic expression for each word phrase on the board. Evaluate...

math 115 - 1.evalute the expression -8 + 15 = 7 is this answer correct? 2....

statistics - Lilly collects data on a sample of 40 high school students to ...

statistics - Lilly collects data on a sample of 40 high school students to ...

statistic - Lilly collects data on a sample of 40 high school students to ...

personal - Lilly collects data on a sample of 40 high school students to ...