Quadratic equation - practice for 12 year olds
Number of problems found: 29
- Positive 3298
Which positive number equals twice its square? - Square Number
If to a square of integer number add 43, we get the square of the following integer number. What is the original number? - Secret number
Find the secret number n, which reversed decreases by 16.4 if the number increases by 16.4. - Solve: 6632
For n ϵ N solve: 100 = (0.01n)² - Radius
Find the radius of the circle with area S = 200 cm². - Pure quadratic equation
Solve pure quadratic equation -7x² +4 = 0. - A fraction
I think of a fraction. If we increase its numerator and denominator by one, the value of the fraction increases by one-tenth. What fraction do I think? - Unknown number 4
I think number. When I divided its square root by its 1/9, I got a number 1. What number am I thinking? - Calculate 25111
The quadratic function has the formula y = -2x²-3x + 8. Calculate the function value in points 5, -2, and ½. - Do you solve this?
Determine area S of a rectangle and the length of its sides if its perimeter is 102 cm. - Column
The vertical pole high $v m tall broke, and its toe fell $x m from the bottom of the pole. At what height above the ground does the pole break? - Right triangle Alef
The obvod of a right triangle is 84 cm, and the hypotenuse is 37 cm long. Determine the lengths of the legs. - Circumference 40401
Calculate the diameter of a circle whose area in cm² and the circumference in cm are expressed by the same number. - Branches 18533
The right triangle has an area of 225 cm². One of its branches is twice the size of the other. Find the lengths of its hangers. - Root
The root of the equation (x-10)² +4 = x² +35x is (equal or greater or less than zero). ... - Determine 83021
Determine the kinetic energy of a car with a mass of 800 kg if it travels at a speed of 10 m. s-1b, 20m. s-1 - Substitute 2633
I think the number is when you substitute it in the expression (x-2). (2x - 1), you get zero. What number can it be? - Cubes
Surfaces of cubes, one of which has an edge of 48 cm shorter than the other, differ by 36288 dm². Determine the length of the edges of these cubes. - Four-thirds 3852
Anton said: I have a natural number x. I'll get three times as much if I increase it to four-thirds. What number did Anton mean? - Circumference 6040
The picture shows a square net in which the side of one square is 1 cm long. Draw a rectangle with an area of 18 squares with a circumference of 22 cm.
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