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2 years ago

If 9 : x = x:4, then x = _____. 36 18 24 6

Mathematics

1 answer:

borishaifa [10]2 years ago

8 0

Solution: 9:x = x:4

⇛9/x = x/4

By doing cross multiplication, we get

⇛9(4) = x(x)

⇛36 = x²

⇛x² = 36

⇛x = √(36)

⇛x = √(6*6)

∴ x = 6 Ans.

also read similar questions: Which equations have the same value of x as 2/3(6x+12)=-24? Check all that apply.1. 4x+8=24 2. 9x+18=-24 3. 4x+12=-24 4. 18x+36/2=-24 5. 4x=-36 6. 4x=-32 7. x=-... brainly.com/question/6702722?referrer

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If f(x)= 3-2 and g(x)=1/x+5 what is the vue of (f/g) (8)

Lena [83]

Answer:

The value of (f/g) (8) = -169

Step-by-step explanation:

Step 1: explaining the question

The quotient (f/g) is not defined at values of x ⇒ both the functions must be defined at a point for the combination to be defined.

⇒(f/g)(x) =(f(x)) / (g(x))

If f(x)= 3-2 and g(x)=1/x+5

⇒then according to the preceding formula: (f/g)(x) =(f(x)) / (g(x))

⇒(f/g)(8) = f(8) / g(8)

to solve this we have to find the value of both f(8) and g(8)

Step 2: find value of f(8) and g(8)

⇒ we know that f(x) = 3-2x and we know dat f(x) = f(8)

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⇒ g(8) = 1/8+5

g(8) =1/13

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⇒ f/g (8) = -13 / (1/13) = -13 * 13/1 = -169

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