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Paraphin [41]
3 years ago
7

Noah says that 9x - 2x + 4x is equivalent to 3x, because the subtraction sign tells us to subtract everything that comes from af

ter 9x. Elena says that 9x - 2x + 4x is equivalent to 11x, because the subtraction only applies to 2x. Do you agree with either of them? Explain ur reasoning. i
Mathematics
1 answer:
Alex787 [66]3 years ago
5 0
Agree with Elena. Noah is wrong. If it is 9x-(2x+4x) then it equals to 3x.
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kkurt [141]

Answer:

AQ1: Divide what she owed by 4

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7 0
3 years ago
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-3 raised to the power 0=
son4ous [18]

Given:

The statement is "-3 raised to the power 0".

To find:

The value of the given expression.

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We know that a raised to the power b can be written as a^b.

Any non zero number raised to the power 0 is always 1. It means,

a^0=1, where a\neq 0.

-3 raised to the power 0 =(-3)^0

                                         =1

Therefore, the value of the given statement is 1.

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3 years ago
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grigory [225]

The correct answer is: A. 150 more students tickets sold than adult tickets.

4 0
2 years ago
Let f(x) = cx^k be a power function such that f(13) is four times the size of f(1). What is the power k?
Ivenika [448]

Answer:

0.540

Step-by-step explanation:

Hi there,

To get started in order to solve this, please recall the property of logarithms.

This question is a bit tricky, but doable. Best way to solve this is first compare the two functions:

f(x) = cx^{k} \\ f(13)=4f(1)  

Now, let's see what the function gives at 13 and 1:

f(13)=c13^{k}\\f(1)=c1^{k}

Something to recognize is that 1 to the power of <em>anything</em> is just 1, so f(1) is reduced to:

f(1)=c  We are making progress!

Next, we can set both f(13) forms equivalent to each other, watch this:

f(13)=f(13) = 4f(1) but we know what f(1) is equal to, and let's substitute our knowns:

c13^{k}=4c1^{k} = 4c the c constant on both left and right side cancel out:

13^{k}=4 Now, take the logarithm form of both side of the equation. I used natural log, but you can also use common logs:

ln(13^{k})=ln(4)  ⇒ k*ln(13)=ln(4) this was performed using <em>the power  log rule. </em>

Isolate k:

k=\frac{ln(4)}{ln(13)} =0.540 using a calculator.

If you liked this solution, hit Thanks or give a rating!

thanks,

8 0
3 years ago
2. What is the scale factor of the dilation (with center at the origin) if point P (4, 3) becomes P’ (8, 6)?
lianna [129]

Answer: Scale factor is 2

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and do the same to the y coordinates: 6/3 = 2

we get 2 each time

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3 years ago
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