Equation + functions - practice problems - page 84 of 85
Number of problems found: 1699
- Cow
104 cow consumes 6968 kg hay per day. How many kg of hay consume one cow in one day? - Expression
If it is true that (l + 15 w)/(w) = 6, then the value of the expression (13 l)/(12 w) is: - Three numbers
Create from digits 1-9 three-digit numbers with their sum the smallest. What value is the sum of these numbers? (Use each digit only once) - Tippler
Bottle with cork cost 8.8 Eur. The bottle is 0.8 euros more expensive than cork. How much are a bottle and the cork?
- Book
To number pages of the thick book, the printer used 4201 digits. How many pages has this book? - Equation
Equation f(x) = 0 has roots x1 = 64, x2 = 100, x3 = 25, x4 = 49. How many roots have equation f(x²) = 0? - Function
For linear function f(x) = ax + b is f(10)=192; f(16)=170. Calculate m, if f(m) = 2008. - Inflation
What is better for people (employees)? ... - Sequence
Calculate what member of the sequence specified by (5n-2+15) has value 20.
- Pumps
The tank is filled with two pumps in 16 minutes. The first pump is filled in 30 minutes earlier than the second one. How many minutes is filled with the first pump? - Euler problem
Someone buys 300 tolars towels. If it were for the same money of 5 more towels, it would be 5 tolars cheaper each. How many were towels? - Exponential equation
In the set R, solve the equation: 7 -5 +19x=4 3 -20x - Guess number
With what number should be divided, number 9727 to be reduced by 70%? - Secret number
Find the secret number n, which reversed decreases by 16.4 if the number increases by 16.4.
- Tourist
Tourists walk at 4.1 km/h. Every 5 km has a 20-minute break. How many kilometers were walked when they started at 4:40 and finished at 10:30? - Thrift woman
Calculate how long grandmother will save on new shoes priced 108 euros if she saves 3 Eur monthly. - Demographics
The population grew in the city in 10 years from 30000 to 34000. What is the average annual percentage increase in population? - Compound interest
Calculate the time when the deposit in the bank with interest 2.6% p.a. doubles. - Right triangle
The legs of the right triangle are in the ratio a:b = 2:8. The hypotenuse has a length of 87 cm. Calculate the perimeter and area of the triangle.
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