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kow [346]
2 years ago
12

If f(x) =-2+8 and g(x) = square root of x+9 which statement is true

Mathematics
1 answer:
lidiya [134]2 years ago
3 0

The statement that -6 is in the domain of f(g(x)) is true

<h3>Complete question</h3>

If f(x) = -2x + 8 and g(x) = \sqrt{x + 9, which statement is true?

  • -6 is in the domain of f(g(x))
  • -6 is not in the domain of f(g(x))

<h3>How to determine the true statement?</h3>

We have:

f(x) = -2x + 8

g(x) = \sqrt{x + 9

Start by calculating the function f(g(x)) using:

f(g(x)) = -2g(x) + 8

Substitute g(x) = \sqrt{x + 9

f(g(x)) = -2\sqrt{x + 9} + 8

Set the radicand to at least 0

x + 9 \ge 0

Subtract 9 from both sides

x \ge -9

This means that the domain of f(g(x)) are real numbers greater than or equal to -9. i.e. -9, -8, -7, -6, ...........

Hence, the statement that -6 is in the domain of f(g(x)) is true

Read more about domain at:

brainly.com/question/24539784

#SPJ1

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Which statement describes the effect on the parabola y = x2 - 1 when it is changed to y = x2 +6?
zlopas [31]

Initial:

y=x^2-1

Changed to:

y=x^2+6

As you can see the change is: from -1 to +6.

In a equation as follow:

y=x^2+k

The k is a transformation that moves up or down the graph of the function. If k is changed to a less value the graph moves down, If k is changed to a greather number the graph moves up.

In this case the graph moves up

To find the number of units the graph moves find the difference betwwen values of k:

6-(-1)=7

Then, the parabola y=x²-1 is moved 7 units up when it is changed to y=x²+6

4 0
2 years ago
Which of these relations on the set {0, 1, 2, 3} are equivalence relations? If not, please give reasons why. (In other words, if
Delicious77 [7]

Answer:

(1)Equivalence Relation

(2)Not Transitive, (0,3) is missing

(3)Equivalence Relation

(4)Not symmetric and Not Transitive, (2,1) is not in the set

Step-by-step explanation:

A set is said to be an equivalence relation if it satisfies the following conditions:

  • Reflexivity: If \forall x \in A, x \rightarrow x
  • Symmetry: \forall x,y \in A, $if x \rightarrow y,$ then y \rightarrow x
  • Transitivity: \forall x,y,z \in A, $if x \rightarrow y,$ and y \rightarrow z, $ then x \rightarrow z

(1) {(0,0), (1,1), (2,2), (3,3)}

(3) {(0,0), (1,1), (1,2), (2,1), (2,2), (3,3)}

The relations in 1 and 3 are Reflexive, Symmetric and Transitive. Therefore (1) and (3) are equivalence relation.

(2) {(0,0), (0,2), (2,0), (2,2), (2,3), (3,2), (3,3)}

In (2), (0,2) and (2,3) are in the set but (0,3) is not in the set.

Therefore, It is not transitive.

As a result, the set (2) is not an equivalence relation.

(4) {(0,0), (0,1), (0,2), (1,0), (1,1), (1,2), (2,0), (2,2), (3,3)}

(1,2) is in the set but (2,1) is not in the set, therefore it is not symmetric

Also, (2,0) and (0,1) is in the set, but (2,1) is not, rendering the condition for transitivity invalid.

5 0
3 years ago
What is the perimeter of quadrilateral ABCD?
alex41 [277]

Answer:

Perimeter of quadrilateral ABCD will be  104

Step-by-step explanation:

Given quadrilateral A'B'C'D' is a reflection of quadrilateral ABCD over the line m.

So, all the corresponding sides of both the quadrilateral should be equal.

Also, we can see from the diagram that A'D'=32,\ A'B'=22,\ BC=20,\ and\ CD=30

As both image are reflection of same scale we can add corresponding sides.

So, the perimeter of ABCD will be

AB+BC+CD+DA

And we have AB=A'B'\ and\ AD=A'D'

Now, perimeter of  ABCD will be 22+20+30+32

Perimeter of quadrilateral ABCD is 104

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Write cot θ in reduced fraction form. (Picture included)
aleksandr82 [10.1K]
Tangent theta = opp/adj = 48/36 = 4/3
8 0
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What is p(tails)? Write your answer as a percentage
Tamiku [17]
Answer: 50%

There are 2 sides, one of which is tails, so
P(tail) = 1/2 = 0.50 = 50%
6 0
3 years ago
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