Quadratic equation + expression of a variable from the formula - practice problems
Number of problems found: 256
- Diagonals 8397
Does a hexagon have 275 diagonals? - Consecutive 6402
The product of two consecutive natural numbers is 46 less than the product of the other two consecutive natural numbers in a row. Identify unknown numbers. - Equation 23
Find the value of unknown x in the equation: x+3/x+1=5 (problem finding x) - Perimeter and diagonal
The perimeter of the rectangle is 82 m, and the length of its diagonal is 29 m. Find the dimensions of the rectangle. - Solve:
Solve: 2r²+7r-r²-9 - Reciprocal value
How do I calculate a number x that is nine greater than its reciprocal (1/x)? - Evaluation of expressions
If a²-3a+1=0, find (i)a²+1/a² (ii) a³+1/a³ - Twice squared
If the square of twice a number is 81, what is the number? Give a positive number x. - The product 9
The product of the third and second terms of the arithmetic progression is 3000. If the common difference is 10, find the first term. - Expressions 3
If k(x+6)= 4x² + 20, what is k(10)=? - Solve equation
Solve equation: [(a²)+3]1/2 + [(a²)-3]1/2 = 5 - X-2 4025
x-2 / x-1 -2 = x + 1 / x-2 - Cylinder 82991
Please express r from the formula for the surface of the cylinder. - Perpendicular 5516
In a right triangle, one perpendicular is 1 m shorter than the hypotenuse. The other perpendicular is 2 m shorter than the hypotenuse. Find the lengths of all sides of the triangle. - Specify 3808
Specify a number that is 61% less than 10². - Completing square
Solve the quadratic equation: m2=4m+20 using completing the square method - Positive 3298
Which positive number equals twice its square? - Elements
If the number of elements is decreased by two, the number of permutations is decreased 30 times. How many elements are? - Calculate 3339
A1 + a3 = 15 a1 + a2 + a3 = 21 Calculate a1 and q (quotient of the geometric sequence). - The sum 27
The sum of a geometric progression's second and third terms is six times the fourth term. Find the two possible values of the common ratio.
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