3 years ago

12x+3=6 to 4x+1=2 Please explain how it went from first one to second one.

Mathematics

1 answer:

GuDViN [60]3 years ago

7 0

Divide 12x+3=6 by 3. 12x/3=4x, 3/3=1, 6/3=2.

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rodikova [14]

Answer:

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Step-by-step explanation:

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3 years ago

Rationalize the denominator of square root of negative 49 over open parentheses 7 minus 2 i close parentheses minus open parenth

navik [9.2K]

The answer is the option d, which is: d) $\frac{-77+21i}{130}$

The explanation for this problem is shown below:

1. Smplify the denominator and rewrite the numerator in this form:

$\frac{7i}{7-2i-4-9i} \\\frac{7i}{3-11i}$

2. Multiply the denominator and the numerator by the conjugated $(3+11i)$ and simplify the expression, as following:

$\frac{7i(3+11i)}{(3-11i)(3+11i)} \\ \frac{21i+77i^{2}}{121+9} \\ \frac{-77+21i}{130}$

3. As you can see, you obtain the expression shown in the option mentioned above.

3 0

4 years ago

Greg invested $20 and quadrupled his money in five years.Sabrena also invested $20 and after five years the amount was equle to

Strike441 [17]

Sabrena 20x20x20x20=160,000
Greg 20x4=80

3 0

3 years ago

Find the value of x and y<br><br> 2x+7y=4<br> -4x-3y=14

guapka [62]

Answer:

x=-5 y=2

Step-by-step explanation:

1) multiplying equation 1 by 4 and multiplying equation 2 by 2 .

2)adding them we get value of y.

3) replacing value of y in either of given equation

5 0

3 years ago

6 plus the product of z and 9

Marina86 [1]

Answer:

6+9x

Step-by-step explanation:

Hope this helped you by any way!

8 0

4 years ago

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