Equations practice problemsAn equation is a statement that asserts the equality of two expressions, which are connected by the equals sign =. Solving an equation containing variables consists of determining which values of the variables make the equality true. The variables for which the equation has to be solved are also called unknowns, and the values of the unknowns that satisfy the equality are called solutions of the equation.
Number of problems found: 1889
The number of germinated plants increased by 50% to 300 from morning to evening. How many plants were germinated in the morning?
- Side wall planes
Find the volume and surface of a cuboid whose side c is 30 cm long and the body diagonal forms angles of 24°20' and 45°30' with the planes of the side walls.
- Similar frustums
The upper and lower radii of a frustum of a right circular cone are 8 cm and 32 cm, respectively. If the altitude of the frustum is 10 cm, how far from the bottom base must a cutting plane be made to form two similar frustums?
- 11990 perimeter RT
A right triangle has integer side lengths and a perimeter of 11990. In addition, we know that one of its perpendiculars has a prime number length. Find its length.
- Peter and Martin
Peter and Martin played by 67 balls. After the game, Peter had 9 more balls than Martin. How many balls did Martin win? Solve the help of the equation.
- Double of principal
How long will it take for the principal to double at 12.25% annual interest?
- 4 digit number
I am a 4 digit number. my thousand period has a first digit which is thrice the second digit, the second digit is two more than the third digit, all the rest of the digits are zeros. What number am i?
- The whole number
A whole number is increased by 7and the number so obtained is multiplied by 5 the result is 45. Find the whole number.
- The Fraction
The denominator of a Fraction is greater than the numerator by 4. if 11 is added to the numerator and 1 subtracted from the denominator, the value of the fraction obtained is 7/3. What is the original fraction?
- Graph move
What is the equation of graph when y=2x² is moved 2 units to the left and 3 unit upward?
- GP sequence
Find the remaining unknown characteristics in the finite geometric sequence, if given: a1 = 5, an = 320, sn = 635, n =?, q =?
- Finite geometric sequence
Find the remaining unknown characteristics in the finite geometric sequence, if given: a1 = 18, an = 13122, sn = 19674, n =?, q =?
A geometric sequence with six members has the sum of all six members equal to 63; the sum of the even members (that has even index) has a value of 42. Find these members.
- Five people
Five people can finish the painting a wall in 4 hours, if only two people are available how many hours do they have to work finish the same job?
- Peter's rectangle
Peter had a rectangle 2 cm wide and of unknown length. The line had a 2 cm rectangle whose length was equal to the perimeter of Peter's rectangle. When they put the rectangles together with their widths, they got a new rectangle with a circumference of 63
- Jointly and cube power
If y varies jointly as x and the cube of z and y=16 when x=4 and z=2, find an equation that represent this relationship
- Three men
If 3 men can do a job in 8 days, how many men can do the same job in 6 days?
- Three dices
What is the probability that the sum of points 14 will be a roll of three dice (B, M, Z)?
- Three cottages
141 guests are accommodated in 3 cottages. In the second cottage there are 8 guests more than in the first cottage and in the third cottage there are 14 guests more than in the second cottage. Find out how many guests are staying in the first cottage.
- What is 19
What is the equation of the line whose x - intercept is - 3 and y - intercept is -4? Find coefficients A, B, C in normal line equation: Ax + By = C
Do you have a linear equation or system of equations and looking for its solution? Or do you have a quadratic equation?