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randlemccray4305
23.05.2020 •
Mathematics
Uma clinica de fisioterapia cobra R$ 50,00 de matrícula e mais de R$ 10,00 por sessão de fisioterapia.Qual a expressão que representa a quantia Y (em reais) a ser paga por um acidente que fez X sessões de fisioterapia
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Ответ:
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Hi my lil bunny!
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Lets do this step by step.
Simplify
.
To write -4 as a fraction with a common denominator, multiply by![\frac{x}{x}](/tpl/images/0714/9466/78e8d.png)
Combine -4 and
.
Combine the numerators over the common denominator.
Subtract 4x from 3x.
Factor -1 out of -x.
Rewirte -2 as -1 (2).
Factor -1 out of - (x) - 1 (2).
Simplify the Expression.
_______________
Rewrite - ( x + 2 ) as -1 ( x + 2 ) .
Move the negative in front of the fraction.
Then your going to find all the values where the expression switches from negative to positive by setting each factor equal to 0 and solving.
Subtract 2 from both sides of the equation.
Solve for each factor to find the values where the absolute value expression goes from negative to positive.
Consolidate the solutions.
________________
Find the domain of
_________________
Set the denominator in
equal to 0 to find where the expression is undefined.
The domain is all values of x that make the expression defined.
( - ∞, 0 ) ∪ ( 0 , ∞)
Use each root to create test intervals.
|Choose a test value from each interval and plug this value into the original inequality to determine which intervals satisfy the inequality.|
Test a value on the interval -2 < x < 0 to see if it makes the inequality true.
Ans : True
Test a value on the interval x > 0 to see if it makes the inequality true.
Ans : False
Test a value on the interval x < -2 to see if it makes the inequality true.
Ans : False
Compare the intervals to determine which ones satisfy the original inequality.
The solution consists of all of the true intervals.
The result can be shown in multiple forms.
Inequality Form:![-2 < x< 0](/tpl/images/0714/9466/2e0d1.png)
Interval Notation:![( -2 , 0 )](/tpl/images/0714/9466/04512.png)
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●✴︎✴︎✴︎✴︎✴︎✴︎✴︎✴︎❀✴︎✴︎✴︎✴︎✴︎✴︎✴︎✴︎✴︎●
Hope this helped you.
Could you maybe give brainliest..?
❀*May*❀