Equations practice problems - page 56 of 211
An equation is a statement that asserts the equality of two expressions, which are connected by the equals sign =. Solving an equation containing variables consists of determining which values of the variables make the equality true. The variables for which the equation has to be solved are also called unknowns, and the values of the unknowns that satisfy the equality are called solutions of the equation.Number of problems found: 4215
- Intersections 49433
Draw a graph of the function given by the equation y = -2x +3, determine its intersections with the coordinate axes, and complete the missing coordinates A [3;? ], B [?; 8]. - Fruit equation
Find how many peaches could be bought instead of buying one melon, one pear, one apple, and two plums if we know that: • Melon and plum cost the same as three apples • if we subtract the price of a pear from the price of peach, we get the price of plum • - Chess pieces
There are five black chess pieces in the box. How many white pieces should we add to this box so that the probability of pulling out a black piece is 1:4? - Two-thirds 49311
Chocolate pieces hang on a Christmas tree. One-third is made of milk chocolate, two-thirds of the rest is dark, and 200 g is white chocolate. How much do all the pieces weigh together?
- Poisson distribution - daisies
The meadow behind FLD was divided into 100 equally large parts. Subsequently, it was found that there were no daisies in ten of these parts. Estimate the total number of daisies in the meadow. Assume that daisies are randomly distributed in the meadow. - The surface
The surface of the cylinder is 1570 cm²; its height is 15 cm. Find the volume and radius of the base. - Two workers
One worker makes a part 4 hours and the second 9 hours later than they would make the same part together. How long does it take for each worker to make the part himself? - Retirement
To purchase a gift for a retiring coworker, everyone had to pay EUR 15. Because four workers were ill on the day coworkers collected the money, everyone present had to pay additional 1 euro except the retiring one. How many workers did the workshop have, - Oscillation 48961
Write the equation of harmonic oscillation if the amplitude of the oscillation is 5 cm and its period is 0.5 s.
- There
There is 5 l of water with a temperature of 20°C in the bucket. We add 3 liters of hot water. The resulting temperature will be 30°C. What was the temperature of the hot water? - Blueberries 48771
Mirka picks up a bucket of blueberries in two hours. Lojzo fills one-third of the bucket every hour. How long would it take to fill one bucket together to the brim? - Part-timers
Six part-timers would take seven hours to pick strawberries. How long would this work take if two more temporary workers were added after three hours? - Here are
Here are white, blue, and red boats in a marina. Two-thirds of the boats in the marina are white, 4/7 of the remaining boats are blue, and the rest are red. If there are 15 red boats, how many boats are in the marina? Which tape diagram represents how man - Grandfather
Grandfather brought a full bucket of blueberries to the market and sold one-sixth of them in the morning. When he sold another 12 liters of blueberries in the afternoon, he had one-sixth of a bucket of blueberries left. How many liters of blueberries are
- Minutes 47973
The workers halved the planned break, so it lasted 42 minutes. How many minutes would it take to extend it by only a quarter? - Thermometer
Immerse a thermometer with a heat capacity of 2.0 J. K-1 in water weighing 67.0 grams. Before water immersion, the thermometer showed a temperature of 17.8 degrees Celsius. After reaching equilibrium, the temperature is 32.4 degrees. What was the water te - Divide 47913
I think the number. If I take six from it and divide the result by two, I get 6. What number do I think? - Gardeners 47883
Gardeners have planted 1,100 flowers. Pansies are 280 less than tulips, and 40 daffodils than pansies. How many pansies have they planted? - A cheetah
A cheetah was separated from his brothers on a hunting mission. The brothers were at the watering hole 120 km away. The lost cheetah knew that he had to make it back before sundown, which was 1.5 hours away. His brothers had planned to leave the wateri
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