Equations practice problems - page 30 of 211
An equation is a statement that asserts the equality of two expressions, which are connected by the equals sign =. Solving an equation containing variables consists of determining which values of the variables make the equality true. The variables for which the equation has to be solved are also called unknowns, and the values of the unknowns that satisfy the equality are called solutions of the equation.Number of problems found: 4215
- Expressed 79474
The length of the cube's edge in cm is expressed as a natural number. Its volume is greater than 100 and less than 200. Calculate the surface area of the cube. - Playground 79454
In Kocourkov, they decided to build a children's playground and volleyball courts. The volleyball court will have dimensions of 18m x 19m. The playground will have a square face. The area of both fields will be the same. What will be the dimensions of t - Paper rolls
The cost, c, of paper towels, based on the number of rolls, r, is given by this equation: c=1.29r What is the unit rate of the cost of the paper towels in dollars per roll? - Smallest 79434
Find the smallest natural x such that 2x is the square and 3x is the third power of a natural number.
- Diala
Diala bought some books in 2012, and then during 2013, she bought 3 times as many books as she bought in 2012. Diala bought 48 books during these two years. Make a diagram to represent the given. How many books did Diala buy each year? - Determine 79364
Given a general triangle ABC. Its perimeter is 30 cm, with side a=2 cm longer than side b and 5 cm shorter than side c. Determine the area of the triangle. - Completely 79274
Kitchen cabinets are sold in widths of 80 cm, 60 cm, and 40 cm. Which assembly can we choose if we have a wall 3.5 m long and we want to completely fill it with an assembly that also includes a dishwasher, the width of which is 60 cm, and the stove is 50 - Pasture 79214
I need to find out the number of bulls in the third period. In the first period, 12 bulls grazed on 3 and 1/3 ha for 4 weeks. In the second period, 21 bulls graze on 10 ha for 9 weeks. How many bulls in the third period graze for 24ha and 18 weeks? The pa - Stamps 79154
Milan has four times more marks than Anka. Anka has twice as few grades as Juro. They have a total of 91 stamps. How many stamps does each person have?
- Fifteen 5
Fifteen more than five times a number equals the difference between -57 and three times the number. Find this integer number. - Rectangle 79084
A rectangle whose one side measures 35m and the other is 7m shorter than the diagonal of the rectangle. Calculate the content in m². - Swimming 79054
One hundred seventy-one pupils from the second to fourth years of primary school participated in swimming training. How many of them were from the fourth grade if there were 10% more third graders than second graders and 20% more fourth graders than third - A box 5
A cereal box states that there are 90 Calories in a 3/4 - cup serving. How many Calories are there in 4 cups of cereal? - Bag of marbles
In a bag full of marbles, 1/4 of these marbles are green, 1/8 are blue, 1/2 are yellow, and the remaining 26 are white. How many marbles are blue?
- The half of sum
Half the sum of a number and 1.75 is -5.1. What is the number? Enter your answer as a simplified mixed number in the box. . - Rectangle 78924
The length of the rectangle is 1 cm more than its width. Its content is 4 cm². What is its width? - Quadrilateral 78874
Given is a quadrilateral ABCD inscribed in a circle, with the diagonal AC being the circle's diameter. The distance between point B and the diameter is 15 cm, and between point D and the diameter is 18 cm. Calculate the radius of the circle and the perime - One-fifth 78854
After thirty km, the cyclist is one-fifth of the race. How long is the whole race? - Repayments 78744
Mrs. Kováčová borrowed a washing machine worth €810. Monthly repayments of €90. She has already repaid €450. How many more months will he pay?
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