Algebra - math word problems
Number of problems found: 2866
Find all divisors of number 493. How many are them?
Cyclist started out of town at 19 km/h. After 0.7 hours car started behind him in the same direction and caught up with him for 23 minutes. How fast and how long went car from the city to caught cyclist?
- Cone A2V
Surface of cone in the plane is a circular arc with central angle of 126° and area 415 cm2. Calculate the volume of a cone.
Determine angles of the right triangle with the hypotenuse c and legs a, b, if: ?
Calculate height and sides of the right triangle, if one leg is a = 81 cm and section of hypotenuse adjacent to the second leg cb = 39 cm.
- Right isosceles
Calculate area of the isosceles right triangle which perimeter is 41 cm.
Right triangle has hypotenuse c = 27 cm. How large sections cuts height hc=3 cm on the hypotenuse c?
- Square diagonal
Calculate the length of diagonal of the square with side a = 23 cm.
Five bus lines runs at intervals 3, 6, 9, 12, 15 minutes. In the morning, suddenly start at 4:00. After how many minutes the bus lines meet again?
Three buyers pay € 468. The first paid 3-times more than second, third half over second. How many euros paid each of them?
The areas of the two circles are in the ratio 2:20. The larger circle has diameter 20. Calculate the radius of the smaller circle.
Determine the number of all positive integers less than 4183444 if each is divisible by 29, 7, 17. What is its sum?
In how many points will intersect 14 different lines, where no two are parallel?
- Sequence 3
Write the first 5 members of an arithmetic sequence: a4=-35, a11=-105.
The rod are 1.9 m long hanging weights 4 kg and 1 kg on ends. Where are centre of rod (distance from weight 4 kg) to be in balance?
- Sequence 2
Write the first 5 members of an arithmetic sequence a11=-14, d=-1
Two gears, fit into each other, has transfer 2:3. Centres of gears are spaced 82 cm. What are the radii of the gears?
Write the first 7 members of an arithmetic sequence: a1=-3, d=6.
Two resistors connected in series give the resulting resistance 65Ω and 10.4Ω in parallel. Determine the resistance of these resistors.
Surfaces of cubes, one of which has an edge of 48 cm shorter than the other, differ by 36288 dm2. Determine the length of the edges of this cubes.