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3 years ago

What is 3x+4-(-6) and what do I need to do

Mathematics

1 answer:

34kurt3 years ago

6 0

Answer:

3x + 10

I just combined like terms.

Hope this helps!

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How many terms does the polynomial x^2 y^2 have

valina [46]

2 terms! hope this helps :)

3 0

3 years ago

What is the nth term of the geometric sequence that has a common ratio of 6 and 24 as it’s third term?

Llana [10]

$\bf \begin{array}{ccll}
n&term&value\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
1&a_1&a_1\\
2&a_2&6a_1\\
3&a_3&6(6a_1)\\
&&36a_1
\end{array}\implies \stackrel{\textit{3rd term is 24}}{36a_1=24}
\\\\\\
a_1=\cfrac{24}{36}\implies a_1=\cfrac{2}{3}$

$\bf n^{th}\textit{ term of a geometric sequence}
\\\\
a_n=a_1\cdot r^{n-1}\qquad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
r=\textit{common ratio}\\
----------\\
r=6\\
a_1=\frac{2}{3}
\end{cases}
\\\\\\
\boxed{a_n=\cfrac{2}{3}\cdot 6^{n-1}}$

8 0

3 years ago

Each of 165 newly manufactured items is examined and the number of scratches per item is recorded (the items are supposed to be

denpristay [2]

Answer:

Step-by-step explanation:

Given that each of 165 newly manufactured items is examined and the number of scratches per item is recorded (the items are supposed to be free of scratches), yielding the following data

x freq x*f x^2*f

0 25 0 0

1 34 34 34

2 37 74 148

3 29 87 261

4 19 76 304

5 8 40 200

6 8 48 288

7 5 35 245

165 394 1480

Mean 2.387878788 8.96969697

Variance 3.267731864

We get E(x) = 2.388 and hence unbiased estimator of mu is 2.388

b) Variance = 3.268

6 0

3 years ago

The correct answer to the question

Sidana [21]

The answer is C you have to convert 20 % in a decimal 0.2

4 0

3 years ago

Which expression is equivalent to x4 • x−2?

damaskus [11]

<h3>Hey there! </h3><h3>The second " $x$ " is has invisible $1$ </h3><h3>Here, this is what I meant: $x^ 1$ </h3><h3>So, now your equation looks like this: $x^4(x^1$ $-2)$ </h3><h3>Add the exponents: $4 + 1$ $= 5$ </h3><h3>Therefore your answer should be: $x^5 - 2$ </h3><h3>(Note: there's many ways to solve these types of equations, I just gave you the basic method) </h3><h3 /><h3>Good luck on your assignment and enjoy your day! </h3><h3>~ $LoveYourselfFirst:)$ </h3>

6 0

3 years ago