Real numbers - practice problems - page 5 of 9
Number of problems found: 162
- What is 21
What is the next number? What is the 7th number? 160, 80, 40, 20, 10, _
- Equation with abs value
How many solutions has the equation (|x| +x) |x-3| = |x+1| in the real numbers?
- Coordinate
Determine the unknown coordinate of the point M [x, 54] of the graph of the function f by rule: y = 3x
- Halfway 82508
Which number is halfway between a quarter of a fifth and a half of a third on the number line?
- 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.
- Wire D
Wire length 1 m is bent to form a semicircle circuit (including the diameter). Determine the radius of the semicircle.
- Rectangle SS
The perimeter of a rectangle is 154 dm, and its diagonal is 62.36 dm. Find the dimensions of the rectangle.
- 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
41 laborers have employed planted trees in the forest. For 7 hour work, a day would end job in 32 days. After 12 days, 7 laborers go forth? How many days are needed to complete planting trees in nurseries by others if they work 8 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 a triangle garden with sides 160 m, 100 m, and 100 m. How many meters of fencing are needed to fence a square garden?
- 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.
- Distance of numbers
Which number has the same distance from the numbers -5.65 and 7.25 on the numerical axis?
- Unknown 63224
You will find an unknown number on the number line between 428 and the unknown number 290.
- On the number line
What number is exactly in the middle between 9.8 and -2.4 on the number line?
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