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EleoNora [17]
3 years ago
7

Simplify the expression: 15w-6w+14w^2

Mathematics
2 answers:
yan [13]3 years ago
6 0
Add together all like terms (15w,6w)
15w-6w= 9w
So your answer would be
9w+14w² 
Darina [25.2K]3 years ago
5 0
=<span><span>14<span>w2</span></span>+<span>9<span>w hope this helps
</span></span></span>
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Answer:

C

Step-by-step explanation:

So, we started out with 2,400 black rhinos.

And we know that they are declining at a rate of 10% per year.

In other words, each subsequent year will only have <em>90%</em> of the previous year's rhinos.

Therefore, our function is:

f(x)=2400(.9)^x

We can do some elimination first.

First, the starting point or y-intercept <em>must </em>be 2400 since that's the number of rhinos we started out with.

Therefore, we can eliminate A and D.

From the remaining choices B or C, we can technically also eliminate B. This is because from our function, we know it's exponential decay, and exponential decay is <em>not</em> a straight line.

However, to double check, let's check the population after 10 years using our function. So:

f(10)=2400(.9)^{10}

Use a calculator:

f(10)\approx837

So, after 10 years, the population should be around 840.

B is definitely <em>not</em> 840 (at x=10). However, C is right around it.

Therefore, we can conclude that C is the right answer.

And we're done!

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3 years ago
Convert 3,200,000 to a scientific notation.
tia_tia [17]
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3 years ago
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lesya [120]

Answer:

<h2>y = 0.5x</h2>

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\dfrac{y}{x}=a\to y=ax\\\\\text{We have}\ x=1,\ y=0.5.\\\\\text{Substitute:}\\\\a=\dfrac{0.5}{1}=0.5\\\\\text{Therefore}\ y=0.5x

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3 years ago
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