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3 years ago

Simplify. 12x • 3x this is for my math class the dot means to multiply

Mathematics

2 answers:

Thepotemich [5.8K]3 years ago

8 0

Answer: 36x²

Step-by-step explanation:

Here we will do more than give you the solution to 12x × 3x. We will also explain and teach you how we came up with the answer, so you can understand it and solve similar problems in the future without help.

In this problem, 12 and 3 are the coefficients and two Xs are the variables. When a coefficient is next to a variable there is an invisible multiplication sign. So you could rewrite the problem as follows:

12 × x × 3 × x =

So now you can multiply what are the same. You can multiply the coefficients together and the x variables together as follows:

12 × 3 = 36

x × x = x²

Then you put the answers together and make the multiplication sign invisible again to get the following answer:

12x × 3x = 36x²

solong [7]3 years ago

7 0

Answer:

36x^2 or 36 times x squared.

Step-by-step explanation:

If x was two it would equal 144. If you replace x with two in my simplification it also equals 144.

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involving the selection of two apples from a bag of red and yellow apples without replacement. Assume that the bag has a total o

ivolga24 [154]

Answer:

1) The probability that the second apple is red is 0.7143 (71.43%).

2) The probability that at least one red apple is picked 0.9341 (93.41%).

Step-by-step explanation:

We can make a probability tree as the attached picture.

1) There are 2 ways in the probability tree when the second apple is red:

Both apples are red:

P(R∩R)= $\frac{10}{14}\frac{9}{13}$ =0.4945

Only the second apple is red:

P(Y∩R)= $\frac{4}{14}\frac{10}{13}$ =0.2198

The probability that the second apple is red is the sum of the previous probabilities.

P(2nd R)=P(R∩R)+P(Y∩R)=0.4945+0.2198=0.7143

2) To find the probability that at least one apple is red, we can get the probability of none of the apples is red and then it will be subtracted from 1.

The way in the probability tree is Y∩Y:

P(Y∩Y)= $\frac{4}{14} \frac{3}{13}$ =0.0659

P(at least 1 R)= 1-P(Y∩Y)=1-0.0659=0.9341

8 0

4 years ago

Read 2 more answers

Find the sum:<br> ( m 3 + 4n) + (3m – 2n+6)

sertanlavr [38]

Answer:

i would belive its 12 :D

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

What is the value of x in the equation 4x + 1.3 = -7.9

forsale [732]

Answer:

x = - 2.3

Step-by-step explanation:

4x + 1.3 = -7.9
4x = -7.9 - 1.3
4x = -9.2
x = -9.2/4
x = - 2.3

4 0

3 years ago

Read 2 more answers

Answer:<br><br> y=<br> Include no spaces in your answer.

olasank [31]

The answer is y = -2

4 0

3 years ago

How am I supposed to figure this out if csc Theta(0) has a radical number on the top?

Harman [31]

$\bf csc(\theta)=\cfrac{hypotenuse}{opposite}\implies csc(\theta)=\cfrac{\sqrt{7}}{2}\cfrac{\leftarrow hypotenuse=c}{\leftarrow opposite=b}\\\\
-----------------------------\\\\
\textit{so hmm using the pythagorean theorem, we can say that}\\\\
c^2=a^2+b^2\implies \pm \sqrt{c^2-b^2}=a\qquad 
\begin{cases}
c=hypotenuse\\
b=opposite\\
a=adjacent
\end{cases}\\\\
\textit{we'll assume is the + of the root, since you're not}\\
\textit{given further info on it, that means the I quadrant}\\\\
$

$\bf -----------------------------\\\\
cos(\theta)=\cfrac{a}{c}\qquad sec(\theta)=\cfrac{c}{a}\qquad tan(\theta)=\cfrac{b}{a}\qquad cot(\theta)\cfrac{a}{b}
$

so just find the "adjacent" side, using the pythagorean theorem, and even though the square root can give you +/-, use the positive one, assuming the angle is in the 1st quadrant

keeping in mind, that the 2nd quadrant is feasible as well, since the opposite side of +2 can also be in the 2nd quadrant

but anyhow, use the I quadrant

7 0

3 years ago