Inequalities - math problems
Number of problems found: 38
Solve inequality: 3x + 6 > 14
- Quadratic inequation
If 5x + x² > 100, then x is not
It is true (prove it) that if a> b> 0: ?
- 3-bracket 2
May be the smallest angle in the triangle greater than 70°?
May be the largest angle in the triangle less than 20°?
- 3-bracket 3
Two angles in a triangle are 90° and 60°. Has triangle at least two equal sides?
At the party everyone clink with everyone. Together, they clink 406 times. How many people were at the party?
- Sum of dividend
If X is divided separately 2.63 and 1.40. And the results of the individual divisions are added to give a result less than X. What is X?
An isosceles triangle has two sides of length 7 km and 39 km. How long is a third side?
Solve the inequation: 5k - (7k - 1)≤ 2/5 . (5-k)-2
For how many integer values of x can 6, 19 and x be the lengths of the sides of triangle?
- Three-digit numbers
How many three-digit numbers are not closer to 600 on the number axis than to 400?
- Quadratic function
It is given a quadratic function y = -4x2+5x+c with unknown coefficient c. Determine the smallest integer c for which the graph of f intersects the x-axis at two different points.
- Report card
Ivor hit 4× grade 5 at the beginning of the school year. How many times must now catch grade 1 to get grade 2 on the report card?
- More money
Lenka has €4.8 more than Natalia. Who will have more and how much, when Lenka give Natalia €2.5?
Straight-line passing through points A [-3; 22] and B [33; -2]. Determine the total number of points of the line in which both coordinates are positive integers.
How many intersections have circles with radius 16 mm and 15 mm, if the distance of their centers is 16 mm.
- Circle chord
Determine the radius of the circle in which the chord 6 cm away from the center of the circle is 12 cm longer than the radius of the circle.
- The perimeter of the rectangle
The length, l, of a rectangle is 4 inches greater than its width, w. The perimeter of the rectangle is at least 30 inches. What inequality shows the range of possible widths of the rectangle?
- 600 pencils
600 pencils we want to be divided into three groups. The biggest groups have ten pens more than the smallest. How many ways can this be done?