# Functions + expression of a variable from the formula - math problems

#### Number of problems found: 271

- Trapezoid - central median

The central median divides the trapezoid into two smaller trapezoids. Determines the ratio of their contents. - Decibel

By what percentage does the sound intensity increase if the sound intensity level increases by 1 dB? - Cube edges

If the edge length of the cube increases by 50%, how does the volume of this cube increase? - Sphere cut

A sphere segment is cut off from a sphere k with radius r = 1. The volume of the sphere inscribed in this segment is equal to 1/6 of the volume of the segment. What is the distance of the cutting plane from the center of the sphere? - Triangle perimeter

Calculate the triangle perimeter whose sides are in ratio 3: 5: 7 and the longest side is 17.5 cm long. - Integer sides

A right triangle with an integer length of two sides has one leg √11 long. How much is its longest side? - Sales off

The price has decreased by 20%. How many percents do I have to raise the new price to be the same as before the cut? - The price

The price of the land increased by 17%. What was the original price of the land if it now costs 46800 €? - One and a half chicken

One and a half chicken bears one and a half egg in one and a half day. How many eggs can withstand from 6 chicken in 6 days? - Interior angles

Calculate the interior angles of a triangle that are in the ratio 2: 3: 4. - Find the

Find the number x, which if it increases by 2, then its square increases by 21 percent. - Volume of sphere

How many times does the volume of a sphere increase if its radius increases 2 ×? - The sum 6

The sum of the 17 different natural numbers is 153. Determine the sum of the two largest ones. - Combinations

If the number of elements increase by 3, it increases the number of combinations of the second class of these elements 5 times. How many are the elements? - Cube into sphere

The cube has brushed a sphere as large as possible. Determine how much percent was the waste. - Harmonic mean

If x, y, z form a harmonic progression, then y is the harmonic mean of x and z. Find the harmonic mean of the numbers 6 and 5. - Lions

If 8 lions is 40% how many would 75% be? - Twice of radius

How many times does the surface of a sphere decrease if we reduce its radius twice? - Unknown number 24

f we add 20, we get 50% of its triple. What is this unknown number? - The aspect ratio

The aspect ratio of the rectangular triangle is 13: 12: 5. Calculate the internal angles of the triangle.

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Functions - math word problems. Expression of a variable from the formula - math word problems.