Maths practice for 14 year olds - page 151 of 361
Number of problems found: 7217
- Triangle height measurement
Draw an isosceles triangle ABC with a base 7 cm long and shoulders 5.5 cm long. Assemble all the heights, measure them, and calculate their sum. - Triangle median difference
Draw an equilateral triangle ABC with a side of 8.5 cm. Assemble all the mines and measure them. What is the difference between the longest and the shortest of them? - Cellar pump drainage
The cellar, which has a floor area of 50 m² and is 3 m below ambient level, was flooded with water to a height of 80 cm. How long does it take for a pump with a power input of 1 kW and an efficiency of 75% (η = 0.75) to drain the water? - Money part division
13300 CZK is divided into three parts. Part 1 is x, part 2 is 2/3 of part 1, and Part 3 is 2/3 of part 2. Find these parts. - Light year
A light-year is a unit of length that expresses the distance light travels in one year. What distance will it travel if the speed of light is approximately 300,000 km/s? - Company interest
At the beginning of the year, the company had CZK 5,000,000 in its account. He has the money saved at a 16% interest rate. How much was the interest for the first year? How much was the interest for the second year? - To the cinema 2
A cinema ticket costs 150 CZK for children and 200 CZK for adults. 100 tickets were sold for the film screening and the cashier collected 16,000 CZK. Calculate: a. How many children's tickets were sold? b. How much CZK was collected for adult tickets? c. - Dressing combination
How many ways can I dress in the morning if I can choose from 10 T-shirts, eight shirts and nine pants? I wear pants plus a T-shirt or pants plus a shirt. - Current in the conductor
Calculate the current in the conductor (in mA) if it is connected to a 4.5 V voltage source and its resistance is 20 (ohm). - Circuit voltage
What is the voltage in the circuit if its total resistance is 920 (Ohms) and the current is 250 mA? - The bulb
What is the resistance of a filament lamp when it is connected to a 9 V battery and has a current of 120 mA? - Urea fertilizer
Urea contains 45% nitrogen. How much fertilizer will be needed per 1 hectare if you supply 30 kg of pure nitrogen? - The sides 3
The sides of an equilateral triangle are 9.4 cm, correct to the nearest decimal place. Work out the upper bound of the side of this triangle. - Bio-yoghurt
Determine the production and selling price of the product (bio-yoghurt). Number of units produced: 1500 pcs/day Number of working days: 22/month Number of workers: 4 employees (average wage: 820 Eur) Rental costs: 60 500 Eur/year Price of promotions: 2120 - Rain probability
Last year, it rained 12 days in March. What is the probability that it rained on March 20? - Seasonal sale
The bike became cheaper on the seasonal sale by 22%, which is 88 euros. At what price is it sold now? - Mass layoffs
The company's new management has announced that mass layoffs will be necessary due to the poor financial situation. It is estimated that the work that 5 employees did will have to be done by 3 employees. What percentage of the company's employees would lo - Clothes CZK 2,400 cost clothes: a sweater 150% more than a T-shirt, trousers 2x more than a sweater, and a jacket as a sweater and trousers. What did the individual clothes cost?
- 15% of
15% of the revenue from sales was CZK 24,000, and it had to be written off as sales tax. What was the net profit on sales? - Banknote distribution
55 banknotes worth 133000 CZK, how many 1000 CZK banknotes, how many 2000 CZK banknotes, how many 5000 CZK banknotes if we know that the number of 2000 CZK banknotes is four fewer than the number of 1000 CZK banknotes
Do you have unsolved math question and you need help? Ask a question, and we will try to solve it. We solve math question.
