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olga_2 [115]
3 years ago
8

PLEASE HELP ASAP 25 PTS + BRAIANLIEST TO RIGHT/BEST ANSWER

Mathematics
2 answers:
MA_775_DIABLO [31]3 years ago
7 0

Replace f(x) with y:

y = x^2 -1

swap the variables:

x = y^2 -1

Solve for y:

Add 1 to each side:

y^2 = x+1

Take the square root of both sides:

y = √(x+1)

To complete the solution use both the positive and negative values.

f^-1(x) = +/+√(x+1)

The last answer is the right one.

Shkiper50 [21]3 years ago
6 0

Answer:

f^-1(x) = ±sqrt(x+1)

Step-by-step explanation:

f(x) = x^2 -1

To find the inverse, exchange x and y and then solve for y

y = x^2 -1

Exchange x and y

x = y^2 -1

Add 1 to each side

x+1 = y^2

Take the square root of each side

±sqrt(x+1) = sqrt(y^2)

±sqrt(x+1) = y

f^-1(x) = ±sqrt(x+1)

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A rectangle has a length of (x + 4) centimeters and a width of 12x centimeters. If the perimeter is 26 centimeters, what is the
mars1129 [50]

Width of rectangle is 8.4 cm

Step-by-step explanation:

Length of rectangle = x+4

Width of rectangle = 12x

Perimeter = 26 cm

We need to find width of rectangle.

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Perimeter=2(length+width)

Putting values and finding x first:

Perimeter=2(length+width)

26=2(x+4+12x)

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26=26x+8

26-8=26x

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Keywords: Perimeter of Rectangle

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5 0
3 years ago
A company sells boxes of small blue pom-poms (b) for $42 and boxes of large orange pom-poms (p) for $52. They make batches of sm
Strike441 [17]

Answer:

b = 40 - p

42b + 52p = 350

Step-by-step explanation:

Given : No. of small blue pom-pom boxes = b

            No. of large orange pom-poms    = p

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           cost of one  large orange pom-pom box = $52

Solution:

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⇒42b+52p=350

Hence Option b is correct

b = 40 - p

42b + 52p = 350

4 0
3 years ago
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To find Jenny's age as a percentage of her great grandmother's age :

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