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abruzzese [7]
3 years ago
13

What is 3(9-3r)= simplifyed

Mathematics
2 answers:
Gwar [14]3 years ago
6 0

27-9r
explaintion:
3•9+3•-3r
27+3•-3r=
27-9r
galben [10]3 years ago
6 0

Answer:

r = 4

Step-by-step explanation:

Simplifying

3r + -3 = 9

Reorder the terms:

-3 + 3r = 9

Solving

-3 + 3r = 9

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '3' to each side of the equation.

-3 + 3 + 3r = 9 + 3

Combine like terms: -3 + 3 = 0

0 + 3r = 9 + 3

3r = 9 + 3

Combine like terms: 9 + 3 = 12

3r = 12

Divide each side by '3'.

r = 4

Simplifying

r = 4

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2 years ago
<img src="https://tex.z-dn.net/?f=9%20-%20%20%5Csqrt%7B%20-%2064%7D%20" id="TexFormula1" title="9 - \sqrt{ - 64} " alt="9 - \s
siniylev [52]
A)9-8i

Explanation

9-\sqrt[]{-64}

Step 1

Let's remember that

A complex number is an object of the form

a+bi

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\begin{gathered} i^2=-1 \\ i=\sqrt[]{-1} \end{gathered}

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\begin{gathered} 9-\sqrt[]{-64} \\ 9-\sqrt[]{-1\cdot64} \\ 9-\sqrt[]{-1}\sqrt[]{64} \\ 9-8\sqrt[]{-1} \\ 9-8i \end{gathered}

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