# Expression of a variable from the formula - high school - math problems

#### Number of problems found: 428

• Solve equation solve equation: ?
• Expression with powers If x-1/x=5, find the value of x4+1/x4
• Third member Determine the third member of the AP if a4=93, d=7.5.
• Find the 19 Find the 1st term of the GP ___, -6, 18, -54.
• Demographics The population grew in the city in 10 years from 30000 to 34000. What is the average annual percentage increase of population?
• Negative difference Find four arithmetic progression members between 7 and -6.
• Expressions 3 If k(x+6)= 4x2 + 20, what is k(10)=?
• Height of the arc - formula Calculate the height of the arc if the length of the arc is 77 and chord length 40. Does exist a formula to solve this?
• Insert 7 Insert five harmonic means between 3 and 18
• Reciprocal value How do I calculate a number x that is 9 greater than its reciprocal (1/x)?
• What are What are the four terms between 4 and 19?
• Equation 23 Find value of unknown x in equation: x+3/x+1=5 (problem finding x)
• Tetrahedron What is the angle of the sides from the base of a three-sided pyramid where the sides are identical?
• Parametric equation Find the parametric equation of a line with y-intercept (0,-4) and a slope of -2.
• Bamboo Bamboo high 32 feet was at a certain height broken by the wind so the bamboo top reached the ground at a distance of 16 feet from the trunk. At what height from the ground was the bamboo broken?
• Calculate 6 Calculate the distance of a point A[0, 2] from a line passing through points B[9, 5] and C[1, -1].
• HP - harmonic progression Determine the 8th term of the harmonic progression 2, 4/3, 1,…
• Airplane Aviator sees part of the earth's surface with an area of 200,000 square kilometers. How high he flies?
• In the 8 In the A. P. 36, 39, 42, …, which term is 276?
• On line On line p: x = 4 + t, y = 3 + 2t, t is R, find point C, which has the same distance from points A [1,2] and B [-1,0].

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