Use the distributive property to simplify the following expression: 3(x - 4)

Mathematics

2 answers:

yKpoI14uk [10]3 years ago

8 0

It would be 3x-12.. is that all you need?

Sphinxa [80]3 years ago

5 0

Answer:

3x - 12

Step-by-step explanation:

3(x - 4)

*You mutliply every term inside the parenthesis by 3*

3x - 12

*Hope this helps! : )*

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ratelena [41]

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4 years ago

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Find the exact value of sin2 theta given sin theta =5/13, 90°<theta <180°

Zepler [3.9K]

Now, we know that 90°< θ <180°, that simply means the angle θ is in the II quadrant, where sine is positive and cosine is negative.

$\bf sin(\theta )=\cfrac{\stackrel{opposite}{5}}{\stackrel{hypotenuse}{13}}\impliedby \textit{now let's find the \underline{adjacent side}}
\\\\\\
\textit{using the pythagorean theorem}\\\\
c^2=a^2+b^2\implies \pm\sqrt{c^2-b^2}=a\qquad 
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c=hypotenuse\\
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b=opposite\\
\end{cases}$

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\\\\\\
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4 years ago

Suppose we want to choose 6 letters, without replacement, from 15 distinct letters. (A) how many ways can this be done, if the o

Olenka [21]

Answer:

Below in bold.

Step-by-step explanation:

A.This is the number of combinations of 6 from 15

= 15C6

= 15! / (15-6)! 6!

= 5,005 ways.

B. This is the number of permutaions of 6 from 15: