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igor_vitrenko [27]
3 years ago
10

1. Consider the function f(x) = x² – 9. Algebraically determine the domain of y = Vf(x) . State using set notation.

Mathematics
1 answer:
AfilCa [17]3 years ago
8 0

Answer:

-3<x<3

Step-by-step explanation:

let y=0

0=x^2-9

0=(x+3)(x-3)

x=-3 and x=+3

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Select any equations that have the same solution set as:
aliya0001 [1]

Answer: 6+4x=26, 4x=20

Step-by-step explanation: 6+4x=20 is the initial equation but completely multiplied by two, so you can know without solving that it is equivalent.

If you solve the equation, 2x+3=13 (subtract 3 from both sides)

2x=10 (divide both sides by 2)

x equals 5.

if you plug in 5 as x to 4x=20, you get 20=20, which is a true statement, so this choice is also correct. You could also solve to prove x equals 5 in this equation as well. Divide 20 by 4 and you get x=5.

8 0
2 years ago
What is the period of the parent cosine function, y=cos(x)? degrees
madreJ [45]

Answer:

The first one is 360.

The second one is 1080.

Step-by-step explanation:

I got it right.

4 0
3 years ago
Read 2 more answers
Stephanie has 60 tickets to the carnival.She used 3/4 of her 60 tickets to play games.Then she used 1/5 of her remaining tickets
Lera25 [3.4K]

Answer:

<h2>She gave her brother 6 tickets</h2>

Step-by-step explanation:

This problem is on fractional numbers.

given that she has 60 tickets

1.She used 3/4 of her tickets to play game

=(3/4)*60

=180/4

=45

She is left with (60-45)= 15 tickets

2. She used 1/5 of her remaining tickets for rides

    =(1/5)*15

   =15/5

   =3

She is left with (15-3)= 12 tickets

3. She gave half of her tickets to her brother.

  = (1/2)*12

  =12/2

 = 6

She gave her brother 6 tickets

3 0
4 years ago
What is equivalent to 6/8
Liono4ka [1.6K]
3/4 is the reduced form, also 12/16 is each doubled
3 0
4 years ago
Read 2 more answers
Brainliest + Points<br><br> Help and explain? So I could understand it?
tatiyna

Answer: A

golden ratio approximately equals:

(1+sqrt(5))/2=1.618

5/3=1.667

7/5=1.4

10/8=5/4=1.25

17/11=1.545

Change everything to decimal form and see what is closest.

So we can see that the photograph size of 5x3 is the best choice as it is the closest in size to the golden ratio.

Any questions at all please feel free to ask! Thank you so much!

5 0
4 years ago
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