Equations practice problems - page 89 of 212
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: 4221
- Parametric form
Calculate the distance of point A [2,1] from the line p: X = -1 + 3 t Y = 5-4 t Line p has a parametric form of the line equation. - Pupil
I'm a primary school pupil. I attended the parents' exercises with children 1/4 of my age, 1/3 for drawing, and 1/6 for flute. For the first three years of my life, I had no ring, and I never went to two rings simultaneously. How old am I? - One-quarter 13953
Calculate the magnitude of the interior angles of the triangle ABC if alpha = two-fifths beta and alpha = one-quarter gamma. - Uboid volume
Calculate the cuboid volume if the walls are 30cm², 35cm², 42cm²
- Equation of the circle
Find the equation of the circle with center (3,7) and circumference of 8π units. - The tourist
The tourist has walked 3/4 of the route. The destination is 12.5 km away. How many kilometers did the route measure? - Difference 13903
The sum of two integers is three, and their difference is 7. Determine the unknown numbers. - Mary
Mary is 12 years old, which is 40% of the age of her mother. How many percent of her mother's age will Mary have after the next 12 years? - Newspapers 13781
Ten machines produced newspapers in 18 hours. Two machines rang for 2 hours. How many hours did the production take?
- Trio ratio
Hans, Alena, and Thomas have a total of 740 USD. Hans and Alena split in the ratio of 5:6, and Alena and Thomas in the ratio of 4:5. How much will everyone get? - Pinwheels 13751
Mom bought desserts for her birthday party. The pinwheel cost CZK 14, and the Indian women CZK 11. She paid 201 crowns for 15 desserts. How many pinwheels did she buy, and how many Indians? - Christmas or Easter
Please calculate this example by the Venn equation. They asked 73 students whether they liked Christmas or Easter. Thirty-four of them like one of the holidays. 39 loves Easter. There are twice as many students who wish for both holidays as those who only - Numbers 13691
Write the number 126 as the sum of three numbers, which ratio is 2: 5: 7 - Pilsen circus
A city citizen saw the circus's arrival in Pilsen in the morning at 08:00. He passed this information at 08:15 to three other city residents. Each of these three people then informed the other three residents at 08:30, and again at 08:45, they reported th
- Two patches
Peter taped the wound with two rectangular patches (one over the other to form the letter X). The area sealed with both patches simultaneously had an area of 40cm² and a circumference of 30cm. One of the patches was 8cm wide. What was the width of the sec - Two-digit number
The digit sum of thinking two-digit natural numbers is 11. When it exchanges a sequence of digits, given a number that is 27 less than the thinking number, find out which number I think. - Tributaries
We can fill the pool with two different tributaries. The first inflow would fill the pool in 18 hours and by both in 6 hours. How many hours would the pool fill with a second inflow? - Two machines
The first machine can produce parts in 24 hours, and the second in 16 hours. The first started working at 6:00 pm. Second at 10:00. At what hour all parts were made? - Pouring alcohol
100 liters of alcohol has 70% How many liters of water need to be added to have 60% alcohol?
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