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LenKa [72]
2 years ago
5

51:30

Mathematics
1 answer:
Softa [21]2 years ago
5 0

Answer:

The correct option is 'c' <em>cross-multiplication</em>

Step-by-step explanation:

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melomori [17]

Answer:

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3 years ago
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Choose the domain for which each function is defined
klemol [59]

Answer:

Part 1) f(x)=\frac{x+4}{x} -----> x\neq 0

Part 2) f(x)=\frac{x}{x+4} ----> x\neq -4

Part 3)  f(x)=x(x+4) ----> All real numbers

Part 4) f(x)=\frac{4}{x^2+8x+16} ----> x\neq -4

Step-by-step explanation:

we know that

The domain of a function is the set of all possible values of x

Part 1) we have

f(x)=\frac{x+4}{x}

we know that

In a quotient the denominator cannot be equal to zero

so

For the value of x=0 the function is not defined

therefore

The domain is

x\neq 0

Part 2) we have

f(x)=\frac{x}{x+4}

we know that

In a quotient the denominator cannot be equal to zero

so

For the value of x=-4 the function is not defined

therefore

The domain is

x\neq -4

Part 3) we have

f(x)=x(x+4)

Applying the distributive property

f*(x)=x^2+4x

This is a vertical parabola open upward

The function is defined by all the values of x

therefore

The domain is all real numbers

Part 4) we have

f(x)=\frac{4}{x^2+8x+16}

we know that

In a quotient the denominator cannot be equal to zero

so

Equate the denominator to zero

x^2+8x+16=0

Remember that

x^2+8x+16=(x+4)^2

(x+4)^2=0

The solution is x=-4

so

For the value of x=-4 the function is not defined

therefore

The domain is

x\neq -4

6 0
2 years ago
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Answer: Okay so you will first come over and take out the a and b and  then that will become c and then you add the rest of the numbr up equaling to

7

Step-by-step explanation: why because 7 is the answer and i know it for all of them your teacher tricked you so you would get a diffrent answer just put 7 trust

plz repay and do mine

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3 years ago
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What is the length of D.<br> 8ft
KengaRu [80]

Answer:

96 inches

Step-by-step explanation:

8 ft is 8(12) inches, which is 96 inches

6 0
2 years ago
Peter drive 320 miles in 8 hours . calculate his average speed .
Ad libitum [116K]

Answer: 40

Step-by-step explanation:

You will take the miles he drove and divided it by the time it took him to get there

320/8=40

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3 years ago
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