Home > Math Group > Question and Answer

Math Group

Question:


marlon0607
Student
High School - 11th Grade

How would you write this as an algebraic expression?

49 increased by by twice a number.

Rate question:

Posted by marlon0607 on Sunday October 18, 2009 at 11:37 AM and tagged with algebraic expressions, math, verbal expressions.

Answers:

  1. kjcdb8er
    kjcdb8er Teacher

    eNotes Editor

    49 increased (added) by two-times a number (N):

    49 + 2 x N = ?

     

    Rate answer:

    Posted by kjcdb8er on Sunday October 18, 2009 at 11:53 AM

  2. neela
    neela Teacher
    Graduate School

    eNotes Editor

    A number could be x in algebra.

    So, twice the number is 2x in algebra.

    49 is 49.

    49 increased by twice the number implies 49 plus 2x or 49+2x.

    Therefore,49+2x is as good as 49 increased by twice the number in algebra.

    Rate answer:

    Posted by neela on Sunday October 18, 2009 at 6:49 PM

  3. msdrwill3
    msdrwill3 Teacher
    Middle School

    49+ 2x...you can use any variable you would like if one is not given to represent two times a number but please dont use the multiplication symbol between 2 and the variable....you're in 11th grade!

    Rate answer:

    Posted by msdrwill3 on Sunday October 18, 2009 at 11:05 PM


  4. kemorton Teacher
    Elementary / Primary

    eNotes Editor

    You need to focus on the key words in the problem.

    Increased = go up, add.

    Twice = two times, double.

    A number = an unknown number which can be represented by a variable, usually x.

    Now that you know the meaning of the key words you can read the problem differently. "49 add by two times x"

    When you change your words into operations (+ - x /) you get 49+2x (Remember that when a known number is right next to a variable it means to multiply, times).

    Rate answer:

    Posted by kemorton on Tuesday October 20, 2009 at 8:17 PM