Question

Задания по математике, добрые люди, помогите) 1 ) (7 1 ) * 2,4 28 - 45 --------------------- (1,5 - 1,6) : (-3) 2) 22,4 (15 - 3) = 35,1 (9 - 4 ) - 45,9; 16x 13х 9 3) |х|+|-5,3|=13,31

Answer 1

1)0,3 
с остальным у меня беда

Answer 2

Task 1: (7 + 1) * 2.4 + 28 - 45 / (1.5 - 1.6) : (-3) + 2

To solve this task, we need to follow the order of operations (PEMDAS/BODMAS). Let's break it down step by step:

1. First, let's simplify the expression inside the parentheses: (7 + 1) = 8. 2. Next, we multiply 8 by 2.4: 8 * 2.4 = 19.2. 3. Then, we add 19.2 to 28: 19.2 + 28 = 47.2. 4. Now, let's simplify the expression inside the second set of parentheses: (1.5 - 1.6) = -0.1. 5. Next, we divide 45 by -0.1: 45 / -0.1 = -450. 6. Then, we add -450 to 47.2: 47.2 - 450 = -402.8. 7. Finally, we divide -402.8 by -3 and add 2: -402.8 / -3 + 2 = 134.27.

Therefore, the solution to the given expression is 134.27.

Task 2: 22.4 + (15 - 3) = 35.1 + (9 - 4) - 45.9

To solve this task, let's break it down step by step:

1. First, let's simplify the expression inside the parentheses: (15 - 3) = 12. 2. Next, we add 22.4 to 12: 22.4 + 12 = 34.4. 3. Now, let's simplify the expression inside the second set of parentheses: (9 - 4) = 5. 4. Next, we add 35.1 to 5: 35.1 + 5 = 40.1. 5. Finally, we subtract 45.9 from 40.1: 40.1 - 45.9 = -5.8.

Therefore, the solution to the given expression is -5.8.

Task 3: 16x + 13x + 9 + 3 |x| - 5.3 = 13.31

To solve this task, let's break it down step by step:

1. First, let's combine like terms: 16x + 13x = 29x. 2. Next, we add 9 and 3: 9 + 3 = 12. 3. Now, let's simplify the absolute value expression: |x|. - If x is positive or zero, |x| = x. - If x is negative, |x| = -x. 4. Next, we substitute the simplified absolute value expression back into the equation: 29x + 12 + 3x - 5.3 = 13.31. 5. Now, let's combine like terms: 29x + 3x = 32x. 6. Next, we simplify the equation: 32x + 12 - 5.3 = 13.31. 7. Now, let's combine like terms: 12 - 5.3 = 6.7. 8. Finally, we solve for x: 32x + 6.7 = 13.31. - Subtract 6.7 from both sides: 32x = 6.61. - Divide both sides by 32: x = 0.2065625.

Therefore, the solution to the given equation is x = 0.2065625.

I hope this helps! Let me know if you have any further questions.