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3 years ago

Please answer these 2 questions please!

Mathematics

1 answer:

Leno4ka [110]3 years ago

5 0

Answer:

The 4th answer, at the bottom.

Step-by-step explanation:

The first answer is proportional, because y is equivalent to .5x.

The second answer is also proportional, because the ratios are equivalent.

The third answer is also proportional, because the line goes through the origin.

The fourth answer isn't proportional, because the ratios aren't equivalent.

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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

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

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

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

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

therefore

The domain is

$x\neq -4$

6 0

2 years ago

Show working please

shutvik [7]

Answer:

Step-by-step explanation:

1.159 R (remainder) 42

| ------------------------

73 | 84.649

-73

116 (brought 6 down)

-73

434 (brought 4 down)

-365

699 (brought 9 down)

-657

42 is the remainder

6 0

2 years ago

Read 2 more answers

Please what is the answer?

nirvana33 [79]

Answer:

the answer is 9730.06

Step-by-step explanation:

india is a blooody country

5 0

2 years ago

Read 2 more answers

The side lenghts of a triangle are 14,15, and x units

iragen [17]

9514 1404 393

Answer:

1 < x < 29

Step-by-step explanation:

The triangle inequality requires the sum of the two shortest sides exceed the longest side.

When x and 14 are the shortest:

x + 14 > 15

x > 1

When 14 and 15 are the shortest:

14 +15 > x

29 > x

Then the requirement for the length of x is ...

1 < x < 29

_____

Additional comment

The length of the third side of a triangle can be between the difference and sum of the two given sides.

3 0

2 years ago

In a recent poll of 2,000 household, 29% had pets.how many households did not have pets?

Sladkaya [172]

2000x(100%-29%)=1420

1420 of them did not have pets

4 0

2 years ago