I think that the first part is true but the second is wrong because a number and its opposite will have the same absolute value. For example, the 5 is the absolute value of 5 and -5. This works with all numbers and their opposites. Since the number 0 doesn't have an opposite value, I think that 0, as an absolute value, only represents 0.
Hope this helps :P
<u>Answer:</u> The value of x will be 2.
<u>Step-by-step explanation:</u>
To calculate the value of 'x' or solve for x, we need to isolate x from 8.
In the equation, 8 is in addition with 'x' so for isolating it, we need to apply the reverse operation of addition.
Reverse operation of addition is subtraction.
We need to subtract 8 from both sides of the equation, we get:

By doing this, we get the value of 'x' as 2.
Error done by Alice was that she added 8 and it did not led to the isolation of 'x'.
The mean for both is under 700
The mean for the second is 653.13.
The first is 683.25.
Answer:

Step-by-step explanation:










radio de un cilindro = 2.20 cm

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Answer:
x = 15
Step-by-step explanation:
From the above diagram, we can see that the right angled triangle has been split into two by drawing a line from the altitude.
This would really in the following ratios or proportions below
25 : x = x : 9
25/x = x/9
Cross Multiply
x² = 25 × 9
x² = 225
x = √225
x = 15