Quadratic equation + expression of a variable from the formula - practice problems - page 12 of 13
Number of problems found: 256
- Determine 4104
Determine the value of x in this equation: (0.125^x) · 104 = 5000 - X-2 4025
x-2 / x-1 -2 = x + 1 / x-2 - Square and rectangle
Calculate the side of a square, which area equals the area of the rectangle having a length of 3 cm greater and by 2 cm smaller than the side of the square. - Determine 3948
Determine the quotient and the first member of GP if a3 = 0.52, and a1 + a2 = 0.39.
- Determine 3938
Determine the quotient and the first member of GP if a3 = 0.39, and a1 + a2 = 0.39. - Diagonal of the rectangle
Calculate the rectangle's diagonal, which area is 54 centimeters square, and the circuit is equal to 30 cm. - Determine 3876
Determine the second term and the quotient GP if a3 = 48.6 a1 + a2 = 6 - 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? - Natural 3838
Find a natural number whose square root is 27 times its square root.
- Specify 3808
Specify a number that is 61% less than 10². - Rectangle
Calculate the area of the rectangle if its length is 12 cm longer than its width and length is equal to the square of its width. - Determine 3782
Determine the value of x if x0.5 = 6 - Determine 3779
Determine the perimeter of the rectangle if its length and width are 2:1 and the area is 98 cm². - 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?
- Unknown number 7
Calculate an unknown number whose 12th power, when divided by the 9th power, gets a number 27 times greater than the unknown number. Determine the unknown number. - Solve equation
Solve equation: [(a²)+3]1/2 + [(a²)-3]1/2 = 5 - Trapezoid
trapezoid ABCD a = 35 m, b=28 m c = 11 m and d = 14 m. How to calculate its area? - Blueberries 2
Lenka and Martin collected eight liters of blueberries in two hours. How long will Lenka take to collect blueberries itself if we know that she collects all 2.5 hours less than Martin? - Euclid theorems
Calculate the sides of a right triangle if leg a = 6 cm and a section of the hypotenuse, which is located adjacent to the second leg b, is 5cm.
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