Real numbers - practice problems - page 5 of 8
Number of problems found: 159
- Equation with abs value
How many solutions has the equation (|x| +x) |x-3| = |x+1| in the real numbers? - Logarithmic equation
Solve equation: log13(7x + 12) = 0 - Exponential equation
Solve exponential equation (in real numbers): 23x-6=9 - Discounts on rail (ZSSK)
The railway company ZSSK offers a discount of 15% (REGIONAL) for 5 Eur/year. Calculate the real discount rate as a percentage, where passengers will travel 19 Eur per week.
- Divisibility
Is the number 186317 exactly divisible by 7? (the result is the integer, and/or remainder is zero) - Wire D
Wire length 1 m is bent to form a semicircle circuit (including the diameter). Determine the radius of the semicircle. - Permutations with repetitions
How many times can the input of 1.2.2.3.3.3.4 be permutated into four digits, three digits, and two digits without repetition? Ex: 4 digits = 1223, 2213, 3122, 2313, 4321. . etc 3 digits = 122.212.213.432. . etc 2 digits = 12, 21, 31, 23 I have tried the - Determine 80662
Given the function y = x² - 4x + 3. Determine all real numbers z such that g(x) = g(-2). - Forestry workers
56 laborers have employed planted trees in the forest. For 8 hour work, a day would end job in 37 days. After 16 days, 9 laborers go forth? How many days are needed to complete planting trees in nurseries by others if they work 10 hours a day?
- Area 4gon
Calculate the area of 4-gon, two, and the two sides are equal and parallel with lengths 11, 5, 11, and 5. Inner angles are 45°, 135°,45°, 135°. - Garden
The square garden area is 2/9 of triangle garden with sides 160 m, 100 m, and 100 m. How many meters of fencing need to fence a square garden? - IS triangle
Calculate interior angles of the isosceles triangle with base 40 cm and legs 22 cm long. - Rhombus ABCD
Rhombus ABCD, |AC| = 63 cm, |BD| = 50 cm. Calculate the perimeter of the rhombus ABCD. - Diagonals of the rhombus
Calculate the height of the rhombus whose diagonals are 18 cm and 6 cm.
- Unknown 63224
On the number line in the middle between the number 428 and the unknown number 290. You will find an unknown number. - Distance of numbers
Which number has the same distance from the numbers -5.65 and 7.25 on the numerical axis? - An aquarium
An aquarium tank that measures 2.4 m high, 6 m long, and 1.5 m wide and is filled with water. The density of water is 1,000 kg/m³. What is the mass of the water in the tank? - On the number line
What number is exactly in the middle between 9.8 and -2.4 on the number line? - Numbers 82720
Which number is also distant from the numbers 5.3 and 7.7 on the number line?
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