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garik1379 [7]
3 years ago
7

Can somebody tell me the answer to this please​

Mathematics
1 answer:
ahrayia [7]3 years ago
7 0
C is 2,2 D 2,6 E 6,5 alway use the x-axis
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Help with problem 14?! 
marysya [2.9K]
All you need to know is that domain is x and range is y, like a graph.
6 0
3 years ago
Solving Rational Inequalities and use sign diagram to sketch the graph. Image attached for better understanding.
Digiron [165]

Answer:

x ∈ (-∞, -1) ∪ (1, ∞)

Step-by-step explanation:

To solve this problem we must factor the expression that is shown in the denominator of the inequality.

So, we have:

x ^ 2-1 = 0\\x ^ 2 = 1

So the roots are:

x = 1\\x = -1

Therefore we can write the expression in the following way:

x ^ 2-1 = (x-1)(x + 1)

Now the expression is as follows:

\frac{(x-2) ^ 2}{(x-1) (x + 1)}\geq0

Now we use the study of signs to solve this inequality.

We have 3 roots for the polynomials that make up the expression:

x = 1\\x = -1\\x = 2

We know that the first two are not allowed because they make the denominator zero.

Observe the attached image.

Note that:

(x-1)\geq0 when x\geq-1

(x + 1)\geq0 when x\geq1

and

(x-2) ^ 2 is always \geq0

Finally after the study of signs we can reach the conclusion that:

x ∈ (-∞, -1) ∪ (1, 2] ∪ [2, ∞)

This is the same as

x ∈ (-∞, -1) ∪ (1, ∞)

6 0
3 years ago
I need help with 14. you have to simplify the expression and then your answer will reveal a letter on the right hand side​
miskamm [114]

Answer:14 is H

Step-by-step explanation:

6 0
2 years ago
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What is the x in 4x+20?
Galina-37 [17]

Answer:

the answer is 5 because if you divide it its your answer

5 0
3 years ago
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I need help please.....
fgiga [73]

Answer:

C

Step-by-step explanation:

Move the decimal to the right 4 times

7 0
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