# Unknown number

Determine the unknown number, which double of its fourth square is equal the fifth its square.

**Result****Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):**

**Showing 0 comments:**

**Be the first to comment!**

#### To solve this example are needed these knowledge from mathematics:

## Next similar examples:

- Two numbers

We have two numbers. Their sum is 140. One-fifth of the first number is equal to half the second number. Determine those unknown numbers. - Unknown number 17

Milada said, I am thinking of a number such that I evaluate expression x^{1}/3, the value of the expression would be 5. Which number Milada thinking? - Unknown number

Identify unknown number which 1/5 is 40 greater than one tenth of that number. - Divisible by 5

How many three-digit odd numbers divisible by 5, which are in place ten's number 3? - Powers

Is true for any number a,b,c,d equality:? ? - Shots

Determine the percentage rate of keeper interventions if from 32 shots doesn't caught four shots. - Base, percents, value

Base is 344084 which is 100 %. How many percent is 384177? - Powers

Express the expression ? as the n-th power of the base 7. - One half

One half of ? is: ? - Holidays - on pool

Children's tickets to the swimming pool stands x € for an adult is € 2 more expensive. There was m children in the swimming pool and adults three times less. How many euros make treasurer for pool entry? - Simple equations

Solve system of equations: 5x+3y=5 5x+7y=25 - Waiting room

In the waiting room are people and flies. Together they have 15 heads and 50 legs (fly has 6 legs). How many people and flies are in the waiting room? - Theatro

Theatrical performance was attended by 480 spectators. Women were in the audience 40 more than men and children 60 less than half of adult spectators. How many men, women and children attended a theater performance? - Cancer

Of the 80 people 50 people ill cancer. What percentage of people isn't ill? - Enrollment

The enrollment at a local college increased 3% over last year's enrollment of 7145. Find the increase in enrollment (x_{1}) and the current enrollment (x_{2}). - Liters od milk

The cylinder-shaped container contains 80 liters of milk. Milk level is 45 cm. How much milk will in the container, if level raise to height 72 cm? - New refrigerator

New refrigerator sells for 878 USD, Monday will be 25% discount. How much USD will save, and what will be the price?