Fit a classification tree using all predictors, using the best-pruned tree. To avoid overfitting, set the minimum number of records in a terminal node to 50. Also, set the maximum number of levels to be displayed at seven (the maximum allowed in XLMiner). Write down the results in terms of rules. (Note: If you had to reduce the number of predictors due to software limitations, or for clarity of presentation which would be a good variable to choose

Answer:

y=0.75x+2

Step-by-step explanation:

you can also do y=3/4x+2

Answer:

A point (a, b) rotated around a point (x, y) 180 degrees will transform to point (-(a - x) + x, -(b - y) + y). A point (a, b) rotated around the origin 270 degrees will transform to point (b - y + x, -(a - x) + y).

Step-by-step explanation:

Answer:

The first one will be 16.9

The second one will be

\(8 \sqrt{2} \)

Step-by-step explanation:

Hope this Helped

The line is passing through (2, 0) and (0, 0.8) and the slope is 0.4. Then the correct option is A.

A linear system is one in which the parameter in the equation has a degree of one. It might have one, two, or even more variables.

From the line, we can observe that the line is passing through (2, 0) and (0, 0.8).

Then the slope of the line will be

Slope = (0.8 – 0) / (0 – 2)

Slope = 0.4

Then the correct option is A.

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Answer:

a.  ║ t - 250 ║ = 30.  b.  The last song will fit into the album.  

Step-by-step explanation:

a. Since the song must be within 30 seconds of 250 seconds to fit in the recording space left on the album, let t be the time duration of the song. So, for it to be within 30 seconds of 250 seconds, the expression is

t - 250 = ±30 or ║ t - 250 ║ = 30.

b. Since the song is 4 minutes and 47 seconds long, converting this to seconds, it is 4 × 60 s + 47 s = 240 s + 47 s = 287 s.

Inserting t into the left side of the equation t - 250 = 287 - 250 = 27 s which is less than 30 s. Since the time difference is less than 30 s, the last song will fit into the album.  

Compound interest formula

where

• A: final amount, in dollars

• P: principal, in dollars

• r: interest rate, as a decimal

• n: number of times interest is compounded per year

• t: time, in years

Substituting with P = $20,000, r = 0.05 (=5/100), n = 4 (quarterly means that the interest is compounded 4 times per year), and t = 3/4 years, we get:

\(4-\cfrac{2}{3}b+\cfrac{1}{4}a~~ + ~~\cfrac{1}{2}a+\cfrac{1}{6}b-7\implies 4-\cfrac{2b}{3}+\cfrac{a}{4}~~ + ~~\cfrac{a}{2}+\cfrac{b}{6}-7 \\\\\\ \left( \cfrac{a}{4}+\cfrac{a}{2} \right)+\left(-\cfrac{2b}{3} + \cfrac{b}{6}\right)+(4-7)\implies \left( \cfrac{a}{4}+\cfrac{a}{2} \right)+\left( \cfrac{b}{6}-\cfrac{2b}{3} \right)+(4-7)\)

\(\left( \cfrac{(1)a+(2)a}{\underset{\textit{using this LCD}}{4}} \right)+\left( \cfrac{(1)b-(2)2b}{\underset{\textit{using this LCD}}{6}} \right)+(-3) \\\\\\ \left( \cfrac{a+2a}{4} \right)+\left( \cfrac{b-4b}{6} \right)-3\implies \left( \cfrac{3a}{4} \right)+\left( \cfrac{-3b}{6} \right)-3 \\\\[-0.35em] ~\dotfill\\\\ ~\hfill {\Large \begin{array}{llll} \cfrac{3}{4}a-\cfrac{1}{2}b-3 \end{array}}~\hfill\)

Answer:

In order of the questions asked, the answers are, C, D, A, C

Step-by-step explanation:

After three half-lives have elapsed, 12.5% of the original nuclide remains, so the answer is C.

if 17 % is daughter nuclide, then 83% is parent nuclide, so , the answer is D

the isotope for dating organic remains is A. carbon-14

for 25% of original, 2 half-lives must have passed, so we get (2)(5730) = 11460

so the answer is C

Answer:

1. monomial

2. Binomial

3. polynomial

4.binomial

5 trinomial

6 binomial

Place value of 432 is 400 +30+02 .

What is place value?

In math, each digit in a very variety features a place value. Place value is outlined because the price pictured by a digit in a very variety on the premise of its position within the variety.

Main body:

The place value of a digit will increase by 10 times as we move  left on the place worth chart and reduces by ten times as we tend to move right.

The place of digit 4 will be hundreds.

The place of digit 3 will be tens.

The place of digit 2 will be ones.

Hence place value of 432 is  400 +30+02 .

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The solution to the expression 4+(−634) is -630

From the question, we have the following parameters that can be used in our computation:

4+(−634)

Rewrite the expression properly

So, we have the following representation

4 + (−634)

Remove the bracket in the above expression

This gives

4 + (−634) = 4 - 634

Evaluate the difference

4 + (−634) = -630

Hence, the solution is -630

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Answer:

\(\sqrt{\frac{15}{2} }\) or 2.738

Step-by-step explanation:

Let’s just look at the triangle on the top with the \(\sqrt{10}\) on the top and x on the bottom. (Basically the top half to the equilateral triangle)

There is a small square in the bottom right corner, which indicates that this triangle is a right triangle. This means that we can use the Pythagorean Theorem: \(a^{2} +b^{2} =c^{2}\)

We know that \sqrt{10} is our hypotenuse, and therefore our c in our equation. Let’s say that x=a in our equation. Therefore we are left to find b. However, b is half the length of the side of the original equilateral triangle. An equilateral triangle means that all three sides are the same length. Therefore our side would also be \sqrt{10} units long. However we know that b is half of that value, so b=\(\frac{1}{2}(\sqrt{10})\) or \(\frac{\sqrt{10} }{2}\)

Plugging these values into the equation:

x^2+ (\frac{\sqrt{10} }{2})^{2}=\sqrt{10} ^{2}

\(x^{2}=\sqrt{10} ^{2}-\frac{\sqrt{10} }{2} ^{2}\)

\(x^{2} =10-\frac{10}{4}\)

\(x^{2} =\frac{15}{2}\)

\(x=\sqrt{\frac{15}{2} }\)

This approximately equals 2.738

Answer:

\(x=\sqrt{\frac{15}{2} }\). Another form of this answer is \(x=\frac{\sqrt{15} }{\sqrt{2} }\)(it's the same thing)

Step-by-step explanation:

Because the triangle is equilateral, all other sides of the triangle are also \(\sqrt{10}\). Also, x is the altitude of this triangle as it forms a right angle with the base and is therefore perpendicular. We know that this triangle is equilateral and in any triangle that has at least two sides that are equal(in other words isosceles), the altitude is also the median and angle bisector. A median would cut the side it reaches into half. So, x would cut the base into two equal parts. Since the base is \(\sqrt{10}\), divide it by two and both halves are \(\frac{\sqrt{10}}{2}\). What we are left with is two right triangles, both with legs \(\frac{\sqrt{10} }{2}\) and x. Using the Pythagorean Theorem, we know that \(a^{2}+b^{2}=c^{2}\), with \(a\) and \(b\) being the legs and \(c\) being the hypotenuse. So, we plug in the values and get \(\frac{\sqrt{10} }{2} ^{2}\)\(+x^{2}=\sqrt{10}^{2}\). Squaring, we get \(\frac{10}{4}+x^{2}=10\). This becomes \(x^{2}=10-\frac{10}{4}\) which equals \(x^{2}=\frac{40}{4}-\frac{10}{4}\). Finally, \(x^{2}=\frac{30}{4}\). This is \(x^{2}=\frac{15}{2}\). Square rooting this we get \(x=\sqrt{\frac{15}{2} }\). Another form of this answer is \(x=\frac{\sqrt{15} }{\sqrt{2} }\)

Answer:

Answer: 45 ∘  and 135  ∘

Step-by-step explanation:

Delta Math

If we know the temperature in degrees Celsius, C, we can find the temperature in degrees Kelvin, K, using this equation: K=C+273 (option 1)

To convert a temperature from degrees Celsius to degrees Kelvin, you simply add 273 to the temperature in degrees Celsius. This is because the Kelvin scale is an absolute temperature scale where 0 K represents the theoretical minimum temperature, known as absolute zero, at which all matter would have zero thermal energy.

The Celsius scale, on the other hand, is a relative temperature scale that uses the freezing and boiling points of water as reference points. The formula K = C + 273 allows us to convert from one scale to the other.

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Complete Question:

If we know the temperature in degrees Celsius, C, we can find the temperature in degrees Kelvin, K, using this equation:

Answer:

\(a = \frac{b}{4x} + \frac{7}{4} - \frac{2}{x}\)

b = 7x + 4ax + 8

Step-by-step explanation:

Hope this helps! :D

Also, if possible, can I have brainliest?

Answer:

y = 2/5x - 4

Step-by-step explanation:

y = mx+b  where m is the slope and b is the y intercept

y = 2/5x - 4

Answer:

Step-by-step explanation:

See image

The value of $m$ is $43$.

The equation $6^{-1}\equiv 6^2\pmod m$ implies that $6^{-1}$ is a valid inverse of $6$ modulo $m$. This means that multiplying $6^{-1}$ by $6$ must result in the remainder $1$ when divided by $m$.

To find the value of $m$, we can then set up the equation:

                                $0\equiv 215\pmod m$

and find all possible values of $m$ that make this equation true.

Multiplying $6^{-1}\equiv 6^2\pmod m$ by $6$, we get $1\equiv 6^3\pmod m$, so $0\equiv 215\pmod m$. So, $m$ must be a divisor of $215$. The only 2-digit divisor of $215$ is $43$.

Therefore, $m$ is a two-digit number, the only possible value of $m$ is $43$.

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Answer:

£631.42

Step-by-step explanation:

Year 1: £785 - (7/100) * £785 = £730.05

Year 2: £730.05 - (7/100) * £730.05 = £678.95

Year 3: £678.95 - (7/100) * £678.95 = £631.42

Answer:

\(y=2x+5\)

Step-by-step explanation:

i did the math

Answer:

Im assuming you wrote a hypothesis or experimented or something, the "..." is where you write whatever your talking about I hope this helps :)

Step-by-step explanation:

My estimates would have changed to get a more accurate answer if I had previously known that.... would affect.... My estimate would have been...... because.....

Answer:

C

Step-by-step explanation:

It’s c

Answer:

It can be like, you walked 3.1415925 miles

so you can say, you walked 3.1416 miles (approx.)

Step-by-step explanation:

Yes, the function y/(x²+2) is continuous at all points in the given region, which is the disk x²+y²<=1.

To show this, we need to show that the function is defined and continuous at every point (x, y) in the disk. The denominator x²+2 is always positive, so the function is defined for all (x, y) in the disk. To show that the function is continuous at each point, we can use the fact that the sum, difference, product, and quotient of continuous functions is also continuous, and that the projection functions x and y are continuous. Therefore, the function y/(x²+2) is continuous on the disk x²+y²<=1,

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