Equation + expression of a variable from the formula - practice problems - page 4 of 40
Number of problems found: 792
- Use AP sum formula
If x+3x+5x+7x+...+87x=5808, what is the value of x? - Lions
If eight lions are 40%, how many would 75% be? - Non linear eqs
Solve the system of non-linear equations: 3x²-3x-y=-2 -6x²-x-y=-7 - Two thirds
Find two-thirds of the number equal to two-thirds of 99. Find this number. - Equilateral triangle
Calculate the area of an equilateral triangle with a circumference of 72cm. - Solve 22
Solve the equation with two ratios: x:14=28:196 - 1:x=4:100 74204
Find the number x so that: 1:x=4:100 - Arithmetic 54441
The arithmetic mean of the six numbers is precisely 9.5. The sum of these five numbers is 56.9. The sixth number is? - Divide 5707
11/4, what will we divide to get 11/12? - Equation: 4386
Solve the power equation: 2.1463 = 0.4179x0.419 - Equation: 4197
Solve the equation: (4096^x) · 8! = 161280 - Determine 3938
Determine the quotient and the first member of GP if a3 = 0.39, and a1 + a2 = 0.39. - Difference 3908
Determine the fourth term and the difference AP if a1 = 3.2 and a2 + a3 = 7. - Determine 3789
Determine x if 52% of x equals 9.1 * 6. - Determine 3782
Determine the value of x if x0.5 = 6 - Expression 3350
Calculate the value of the expression x / y, if you know that (-4x + 3y) / y = 5 - Properties of eq2 roots
If p and q are the zeroes of the quadratic polynomial f(x) = 2x2 - 7x + 3, find the value of p + q - pq. - The sum 39
The sum of the first six terms of the arithmetic sequence is 72, and the second term is seven times the fifth term. Find the first term and the AP difference. - Arithmetic progression 2
The 3rd term of an Arithmetic progression is ten more than the first term, while the fifth term is 15 more than the second term. Find the sum of the 8th and 15th terms of the Arithmetic progression if the 7th term is seven times the first term. - Angles of a hexagon
Find the interior angles of a hexagon if the sizes of the angles form an arithmetic sequence, and the smallest angle is 70°.
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