Math Problem Statement
1. Накресліть у зошиті та заповніть таблицю 9. 2. Обчисліть: 1) (| -11 | - | -12 | : 3) : |(21 : | -7 | + | 5/2 | 1,6 |); 2) | -25 | : | -5 | + | -7/3 | 3/2 | + | -0.5 |.; 3. Чи існує таке число a, що: 1) |a| = -|a| = | -a |; 2) |a| = -|a|? Якщо так, то навести приклад. 4. Розв'яжіть рівняння: 1) |x| - 70 = 30; 2) |x| + 55 = 68; 3) |x| - 32 = 79; 4) | -x | = 54,9; 5) |x| = -4; 6) |x| = -12.
Solution
This image contains a set of mathematical tasks related to absolute values, equations, and properties of numbers. I'll break down the tasks for you:
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Table Completion: The first task involves completing a table, but the exact details of the table are not visible to me. It seems to involve calculating the sum of absolute values of and for various values in the table. You might need to compute expressions of the form .
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Compute the following expressions:
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- ( | -11 | - | -12 | : 3 | (
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Math Problem Analysis
Mathematical Concepts
Absolute Values
Equations
Properties of Absolute Values
Formulas
|x|
x = a, |x| = |a|
Theorems
Properties of absolute values
Solving equations with absolute values
Suitable Grade Level
Grades 7-9