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