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Snowcat [4.5K]
2 years ago
10

Use the following data set to answer numbers 1 - 4.

Mathematics
1 answer:
alukav5142 [94]2 years ago
6 0

Answer:

1. 13+18+13+14+13+16+14+21+13

= 145/9

=16.11

2. Range =145

3. Mode =13

4. Median =14

Step-by-step explanation:

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Write the quadratic function in the form g(x)=a (x-h)2 +kThen, give the vertex of its graph. G(x) =2x2 +20x+49Writing in the for
Snezhnost [94]

The quadratic function given to us is:

g(x)=2x^2+20x+49

We are asked to find the vertex form of the function.

The general formula for the vertex form of a quadratic equation is:

\begin{gathered} g(x)=a(x-h)^2+k \\ \text{where,} \\ (h,k)\text{ is the coordinate of the vertex} \end{gathered}

In order to write the function in its vertex form, we need to perform a couple of operations on the function.

1. Add and subtract the square of the half of the coefficient of x to the function.

2. Factor out the function with its repeated roots and re-write the equation.

Now, let us solve.

1. Add and subtract the square of the half of the coefficient of x to the function.

\begin{gathered} g(x)=2x^2+20x+49=2(x^2+10x+\frac{49}{2}) \\ \text{half of coefficient of x:} \\ \frac{10}{2}=5 \\ \text{square of the half of the coefficient of x:} \\ 5^2=25 \\  \\ \therefore g(x)=2(x^2+10x+25-25+\frac{49}{2}) \end{gathered}

2. Factor out the function with its repeated roots and re-write the equation.

\begin{gathered} g(x)=2(x^2+10x+25)-2(25+\frac{49}{2}) \\ re-\text{write the above function} \\ g(x)=2(x^2+10x+25)-1 \\ \text{Let us factorize this:} \\ g(x)=2(x+5)^2-1 \end{gathered}

Therefore, we can conclude that the Equation and vertex of the equation is:

\begin{gathered} Equation\colon g(x)=2(x+5)^2-1 \\  \\ Vertex\colon(-5,-1) \end{gathered}

5 0
2 years ago
7 x [{9+8)-(12-7)] answer
KatRina [158]

Answer:

84

Step-by-step explanation:

7×[17-5]

7×12

84

hope it will help

7 0
3 years ago
Fill in the blank with a symbol that makes this statement true please help with my homework
nekit [7.7K]
<span> 2.5=2 1/2 = 5/2
2/5 = 0.4
bring to decimals 2.5 >0.4
because by dropping the decimal points we gave 25>4
compering by fraction 2 1/2 = 5/2
2/5
bring to a common denominator of 10  5(5) / 2(5); 2(2) / 5(2)=>
25/10; 4/10
compare numerators 25>4

</span>
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4 years ago
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One polygon has a side of length 2 feet. A similar polygon has a corresponding side of length 4 feet. The ratio of the perimeter
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The ratio of the smaller to the larger is given as 2:4.  Another way to write this is as a fraction: \frac{2}{4} which of course you can see now will reduce to \frac{1}{2}.  That's your ratio.
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