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9966 [12]
3 years ago
6

After plotting the data where x=area, and f(x)=the length of one side of the square, Sam determined the appropriate model to app

roximate the side of a square was *square root sign*x+2-1 Use the model Sam created to predict the side length of the square when the area is 14.
3
9
16
28
Mathematics
1 answer:
o-na [289]3 years ago
5 0

Answer:

3

Step-by-step explanation:

Plugging 14 into the given model equation, you get:

\sqrt{14+2}-1= \\\\\sqrt{16}-1=\\\\4-1=\\\\3

Hope this helps!

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igomit [66]

Answer:

(fog)(x) = f( \: g(x) \: ) \\  = 8(10 - 2x) - 5 \\  = 80 - 16x - 5 \\  =  - 16x + 75

(gof)(x) = g( \: f(x) \: ) \\  = 10 - 2(8x - 5) \\  = 10 - 16x + 10 \\  =  - 16x + 20

I hope I helped you^_^

8 0
3 years ago
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6 0
3 years ago
You have a 5-question multiple-choice test. Each question has four choices. You don’t know any of the answers. What is the exper
mrs_skeptik [129]
Each question has four choices, then the probability to guess a correct answer is p= \frac{1}{4} and the probability to select incorrect choice is  q=1-p=1- \frac{1}{4} = \frac{3}{4}.

You have a 5-question multiple-choice test, then n=5. The <span>probability that you will guess exactly three out of five questions correctly is </span>
<span /><span>
</span><span>C_n^kp^nq^{n-k}=C_5^3p^3q^{5-3}= \dfrac{5!}{3!\cdot 2!} \left( \dfrac{1}{4} \right)^3\left( \dfrac{3}{4} \right)^2=\dfrac{1\cdot 2\cdot 3\cdot 4\cdot 5}{1\cdot 2\cdot 3\cdot 1\cdot 2} \cdot \dfrac{9}{1024} =</span>
= \dfrac{90}{1024} = \dfrac{45}{512}.
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6 0
3 years ago
Read 2 more answers
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Tomtit [17]

Answer:

Step-by-step explanation:

5k+ 6k+9k=20k

20k=£60

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£15, £18, £27

3 0
3 years ago
Write an equation to match each graph.<br><br> I already tried y=[x] that didn’t work
UkoKoshka [18]

Answer:

y=|x|

Step-by-step explanation:

We know

general modulus function passes through origin as |0| is 0

And it's symmetric on both sides of y axis .

As it's not one -one function

Means

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So the graph is y=|x|

6 0
2 years ago
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