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o-na [289]
3 years ago
15

I don’t understand plz help

Mathematics
1 answer:
Savatey [412]3 years ago
3 0
Post ? in a coment then ill answer
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If A = {1,20,30..} and B = {4,6} find n(A-B)?​
boyakko [2]

Answer:

If A = {1,20,30..} and B = {4,6} find n(A-B)?

6 0
2 years ago
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Describe the piecewise function below by evaluating the function for given values of the domain
tekilochka [14]
We have a piecewise function.
 Therefore, to find the function, we must evaluate each domain separately.
 We have then:

 For x  \leq  -2:
 The function for this domain is:
 y = -3


 
For -2 \ \textless \  x  \leq  2:
 
The function for this domain is:
 y = mx + b

 Where,
 b = -3

 m = (y2 - y1) / (x2 - x1)

 m = (1 - (-7)) / (2 - (-2))
 m = (1 + 7) / (2 + 2)

 m = 8/4

 m = 2
 Substituting:
 y = 2x - 3


 
For x\ \textgreater \  2:
 
The function for this domain is:
 y = 5
4 0
3 years ago
A profit of $9 in integers
DedPeter [7]
Because the situation represents a profit, the integer is 9.
4 0
3 years ago
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At a school picnic, your teacher asks you to mark a field every 10 yards so students can play football. The teacher accidentally
Oxana [17]
Approximately 9 meters are in 10 yards, (as there is approximately 1 meter in a yard, .9144 to be exact.) 
3 0
3 years ago
Domain of the function f(x)=3x/4x^2-4
yaroslaw [1]

Answer:

the complete question in the attached figure


we have that

f(x)=3x/(4x²-4)


we know that

the denominator can not be zero

so

(4x²-4)=0

4x²=4

x²=1----> x=(+/-)√1

x1=1

x2=-1

the values ​​of x=1 and x= -1 make the denominator zero, therefore they do not belong to the domain of the function


the answer is

the domain of the function is all real numbers except 1 and -1




8 0
3 years ago
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