Expression of a variable from the formula - 8th grade (13y) - math problems

Number of problems found: 523

  • Simplify
    expr_3 Simplify expression - which expression is equivalent to: 3(m + 2) − 4(2m − 9)
  • Expressions
    equation Expression (3a-7).(3a+7) is identical with: ?
  • Value of expression
    expr X=2, y=-5 and z=3 what is the value of x-2y?
  • Simplify 2
    expr Simplify expression: 5ab-7+3ba-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?
  • Which
    plusminus_11 Which decimals when subtracted equal 3.89: a - b = 3.89
  • Even / odd numbers
    parne_neparne a / Using variable n write two consecutive odd numbers. b / the sum of three consecutive odd numbers is 333. What are this numbers?
  • The quotient 2
    numbers2_6 The quotient of the quantity k minus 10 and m
  • Linear function
    runners Using one of the following forms x+p=q or px=q write an to represent these problems using x as the unknown variable Larry ran 7 more miles than Barry in a month, if Larry ran 20 miles how many did Barry run? please help its due tomorrow
  • Midpoint 5
    segment_4 FM=3x-4, MG=5x-26, FG=? Point M is the midpoint of FG. Use the given information to find the missing measure or value.
  • Sales off
    sale_6 The price has decreased by 20%. How many percents do I have to raise the new price to be the same as before the cut?
  • Simple equations
    enc2 Solve system of equations: 5x+3y=5 5x+7y=25
  • Cross five
    5squares2 The figure on the picture is composed of the same squares and has a content of 45cm². What's its perimeter?
  • Finding the base
    percent_9 Find the unknown base of percent: 12.5 percent of what = 16?
  • Marriage sttus
    family_26 In our city, there are 3/5 of the women married to 2/3 of the men. Find what part of the population is free.
  • Greg and Bill
    Clock0400_12 Greg is 18 years old. He is 6 less than 4 times Bill's age. How old is Bill?
  • Circle r,D
    bavlnka Calculate the diameter and radius of the circle if it has length 26.59 cm.
  • Mean
    avg A student food the mean of 50 items as 38.6. When checking the work he found that he had taken one item as 50 why it should correctly read as 40 in this circumstances. What should be the correct mean?
  • Lions
    lion If 8 lions is 40% how many would 75% be?
  • Find the
    cuboid_1 Find the surface of the cuboid if its edges have the dimensions a, 2/3a, 2a

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Expression of a variable from the formula - math word problems. Examples for 8th grade.