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Ilya [14]
3 years ago
8

Help Help Help Help Help Help Help

Mathematics
1 answer:
makvit [3.9K]3 years ago
6 0
You got both questions correct :)
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Find constants A and B such that (x + 7)/(x^2 - x - 2) = A/(x - 2) + B/(x + 1) for all x such that x≠ -1 and x≠ 2 Give your answ
Yanka [14]
For this case we have the following expression:
 (x + 7) / (x ^ 2 - x - 2) = A / (x - 2) + B / (x + 1)
 Rewriting we have:
 (x + 7) / ((x-2) (x + 1)) = A / (x - 2) + B / (x + 1)
 We multiply the equality by (x-2) (x + 1):
 x + 7 = A (x + 1) + B (x - 2)
 Rewriting we have the following system of equations:
 A + B = 1
 A - 2B = 7
 Solving the system we have:
 A = 3
 B = -2
 Answer:
 
constants A and B are:
 
A = 3
 
B = -2
6 0
3 years ago
- (-(2)) =<br><br><br> Math problem
pantera1 [17]
Answer: 2



Step by step:........
6 0
4 years ago
Determine the domain on which the following function is increasing:
d1i1m1o1n [39]
X is less than or = to 4
3 0
3 years ago
-4(-8x + 12y)<br> Distribute
worty [1.4K]

Answer:

-32x-48y

Step-by-step explanation:

multiply: -4 (8x) - 4 (12y) = -32x-48y

7 0
3 years ago
Read 2 more answers
For this graph, mark the statements that are true.
lara [203]

The true statements for this graph are:

B. The domain is the set of all real numbers.

D. The range is the set of all real numbers greater than or equal to zero.

<h3>What is a domain?</h3>

A domain can be defined as the set of all real numbers for which a particular function is defined. For this graph, the vertex of the parabola is (1, 0) and as such, the equation will be given by:

y = (x - h)² + k

y = (x - 2)² + 0

y = x² -4x + 4

Therefore, the graph's domain include a set of all real numbers.

<h3>What is a range?</h3>

A range refers to a set of all real numbers that connects with the elements of a domain. For this graph, we can observe that only real numbers greater than or equal to zero (0) are connected to the values on the x-axis of the domain.

In conclusion, we can logically deduce that the true statements for this graph are:

  • Its domain include all real numbers.
  • Its range include all real numbers that are greater than or equal to zero (0).

Read more on domain here: brainly.com/question/17003159

#SPJ1

6 0
2 years ago
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