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3 years ago

The function j(x)= 34x represents the number of jumping jacks j(x) you can do in x minutes. How many jumping

Mathematics

1 answer:

inessss [21]3 years ago

3 0

B is the answer because i am overweight so i cant jump

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Are the these expressions equivalent 6a + 12 and 3(3a + 4)

kow [346]

Answer:

Step-by-step explanation:

6a + 12 =? 3(3a + 4)

Distribute

6a+12 =? 3*3a + 3*4

6a+12 =? 9a +12

The expressions are not equivalent

5 0

4 years ago

Read 2 more answers

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

3 years ago

F(x) = –x^2+ 6<br> Find f(-3)

Lynna [10]

So if f(-3), then x = -3.

Substitute.

y = -(-3)^2 + 6

= -(9) + 6

= -3

Hope it helped

6 0

3 years ago

Read 2 more answers

Please help!! Thank you so much in advance :)

meriva

Answer:

Step-by-step explanation:

x = 1 - i sqrt(2) ^ y = 10 + i sqrt(2)

x = 1 + i sqrt(2) ^ y = 10 - i sqrt(2)

6 0

3 years ago

Read 2 more answers

Can someone help?

adelina 88 [10]

Answer:

11,706.52

Step-by-step explanation:

To find the total on how much she spent, you would add the amount she spent together.

8709.06 + 2997.46 = 11,706.52

Feel free to let me know if you need more help. :)

6 0

3 years ago