Expression of a variable from the formula - math word problems

Number of problems found: 995

  • Expression
    expr_2 Solve for a specified variable: P=a+4b+3c, for a
  • Simplify
    expr_3 Simplify expression - which expression is equivalent to: 3(m + 2) − 4(2m − 9)
  • Unknown number 17
    5to2 Milada said, I am thinking of a number such that I evaluate expression x1/3, the value of the expression would be 5. Which number Milada thinking?
  • Value of expression
    expr X=2, y=-5 and z=3 what is the value of x-2y?
  • Expressions
    equation Expression (3a-7).(3a+7) is identical with: ?
  • Expression with powers
    eq222_9 If x-1/x=5, find the value of x4+1/x4
  • Solve equation
    hrusky_2 solve equation: ?
  • Height of the arc - formula
    sircular_segment Calculate the height of the arc if the length of the arc is 77 and chord length 40. Does exist a formula to solve this?
  • Given
    1998-4b Given 2x =0.125 find the value of x
  • Demographics
    population The population grew in the city in 10 years from 30000 to 34000. What is the average annual percentage increase of population?
  • Third member
    seq_6 Determine the third member of the AP if a4=93, d=7.5.
  • Find the 19
    numbers_3 Find the 1st term of the GP ___, -6, 18, -54.
  • Hotel
    hotel The hotel has a p floors each floor has i rooms from which the third are single and the others are double. Represents the number of beds in hotel.
  • Tetrahedron
    3sidespyramid What is the angle of the sides from the base of a three-sided pyramid where the sides are identical?
  • Simplify 2
    expr Simplify expression: 5ab-7+3ba-9
  • Negative difference
    arithmet_seq Find four arithmetic progression members between 7 and -6.
  • Expressions 3
    parabola2_1 If k(x+6)= 4x2 + 20, what is k(10)=?
  • Insert 7
    seq_1 Insert five harmonic means between 3 and 18
  • Reciprocal value
    fx How do I calculate a number x that is 9 greater than its reciprocal (1/x)?
  • A number 2
    expr A number decreased by the difference between four and the number

Do you have an interesting mathematical word problem that you can't solve it? Submit a math problem, and we can try to solve it.

We will send a solution to your e-mail address. Solved examples are also published here. Please enter the e-mail correctly and check whether you don't have a full mailbox.

Please do not submit problems from current active competitions such as Mathematical Olympiad, correspondence seminars etc...