# Examples of equations for 9th grade (14y)

#### Number of problems found: 947

- 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. - 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? - 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)? - The ratio 7

The ratio of the sides of two squares 4:5 if the sum of their areas is 180 cm² Find the sides of the two squares. - Find two 2

Find two decimals between 4.56 and 6.927 so that the difference between any two consecutive decimals is the same. - Two expressions

When x = 3 and y = 5, by how much does the value of 3x² – 2y exceed the value of 2x² – 3y? - 10 workers

10 workers will perform the assigned work in 8 days. How long will it take to get the job done if 6 workers work for six days and then another six join them? - Squares

From the square with the integer side, cut out the square with the integer side so that the residual area is 100. What is the longest possible side of the larger square? - Discount

If someone gives u discount on "X" at 5% for 60 days. Then the discounted amount is 80000. find the actual amount? Discounted Amount=80000 rate=5% Period=60 days Actual amount=? - 24carat gold

The goldsmith cast 22 carat gold and 14 carat gold and earned 20 dkg of 18 carat gold. How much gold did he use? - Two angles 2

Two angles of a triangle have the same measure and the third one is 45 degrees greater than the measure of each of the other two. Find the measure of the largest angle in the triangle. - What is

What is the circumference of an isosceles trapezoid with a content of 106.75 cm^{ 2 }, the lengths of the sides are in the ratio 1: 3: 2: 1 and the bases are 6.1 cm apart? - Production plan

The annual production plan was exceeded by 2%. If production was higher by 300 products, the plan would be exceeded by 5%. What was the annual production plan? - Solve:

Solve: 2r^{2}+7r-r^{2}-9 - Sharing money

A certain sum of money is shared in the ratio 2 :3:9. If the difference between the first and the second is $40, then the amount of money shared is

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Do you have a linear equation or system of equations and looking for its solution? Or do you have a quadratic equation? Equations practice problems. Examples for 9th grade.