Numbers - math word problems
Double round number 727, first to tens, then to hundreds. (double rounding)
- Daily average
Calculate the average temperature during the day, when 15 hours was 20 °C and 9 hours was 13 °C.
- Primes 2
Which prime numbers is number 2025 divisible?
Calculate the missing denominator x: ?
- Divisibility 2
How many divisors has integer number 13?
Determine all divisors of number 84.
After increasing the number of employees by 15% company has 253 employees. How many employees take?
- Strange x
For what x is true ??
Convert 660 m3 of natural gas volume to energy units kWh. Combustion of 1 cubic meter of natural gas is released energy 10.55 kWh.
Help little C.F. Gauss sum all the integers from 1 to 400.
- Is equal
Is equal following terms? ?
27 students of 6.D class is going to a trip. They pay 9 € each. The teacher got 153 €. How many children have not paid?
Use law of square roots roots: ?
- Determine the number
Determine the number x that ?.
- Quadratic equation
Determine the numbers b, c that the numbers x1 = -1 and x2 = 3 were roots of quadratic equation: ?
- Diofant 2
Is equation ? solvable on the set of integers Z?
The tank is filled with two pumps in 16 minutes. The first pump is filled in 30 minutes earlier than two one. How many minutes is filled with the first pump?
By introducing a new variable solve biquadratic equation: ?
- Diagonals of the rhombus
Calculate height of rhombus whose diagonals are 12 cm and 19 cm.
- Trigonometric functions
In right triangle is: ? Determine the value of s and c: ? ?