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ipn [44]
2 years ago
10

Pls help with this question pls and thx!

Mathematics
1 answer:
svetoff [14.1K]2 years ago
8 0
ANSWERS:

4a= 25/6 or 4.16 and 6 is repeating or 4 1/6

4b= 26

5a= 39.556

5b= 5.4


WHY:

4a= simplify

4b= divide the first expression by the second expression

5a= multiply

5b= divide


MARK ME BRAINLIEST PLEASE
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maw [93]

Answer:

2

Step-by-step explanation:

Perimeter of a rectangle = 2(length + breadth)

=> 2{2x + (x + 4)) = 20

=> (2x + x + 4) = 20/2 = 10

=> 3x + 4 = 10

=> 3x = 10 - 4 = 6

=> x = 6/3 = 2

Here, according to the diagram

Length = 2x = 2(2) = 4

Breadth = x + 4 = 2+4 = 6

But breadth should always be lesser than the length. From this, it can be concluded that the actual breadth is 2x and actual length is x + 4, for perimeter to be 20.

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Answer:

  1. D. f^-1(x) = log2(x -6)
  2. 4x^2 -3 . . . . x ≤ 0
  3. B. √(x^5) -3√(x^3) -18√x

Step-by-step explanation:

1. When you replace f(x) by x and x by y, you have

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The first thing you do is subtract 6; then you take the base-2 logarithm:

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The range of f(x) is (-∞, 0], so that is the domain of f^-1(x). That is, f^-1(x) is defined for x ≤ 0.

3. The product of the two functions is ...

... (x -6)(√x)(x +3) = (√x)(x^2 -3x -18)

<em>Every term</em> will have a factor of √x, and the coefficients will be 1, -3, -18. Only selection B matches those conditions.

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