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4 years ago

2m+6=2(2m+3)-2m true or false?

Mathematics

2 answers:

Alborosie4 years ago

8 0

The answer is true.

Simplify the right side of the equation by first distributing 2 into the values in the parentheses.

2m+6=2(2m+3)-2m

2m+6=4m+6-2m

Then combine the like terms, 4m and -2m.

2m+6=2m+6

AlexFokin [52]4 years ago

7 0

2m + 6 = 2(2m + 3) -2m
2m + 6 = 4m - 2m + 6
2m + 6 = 2m + 6
True.

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3 years ago

What is the value of C?<br>14 = -2C - 6 – 3C <br>

icang [17]

Answer:

C = -4

Step-by-step explanation:

First, combine like terms (terms with the same amount of variables):

14 = -2C - 3C - 6

14 = (-2C - 3C) - 6

14 = (-5C) - 6

Isolate the variable, C. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS. PEMDAS is the order of operation, and equals:

Parenthesis

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Subtraction.

First, add 6 to both sides:

14 (+6) = -5C - 6 (+6)

14 + 6 = -5C

-5C = 20

Next, divide -5 from both sides:

(-5C)/-5 = (20)/-5

C = 20/-5

C = -4

-4 is your value for C.

7 0

3 years ago

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Greeley [361]

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3 years ago

Write the ratio as a ratio of a whole numbers using fractional notation 6 1/2 to 15 1/6

motikmotik

$\bf 6\frac{1}{2}:15\frac{1}{6}\qquad 
\begin{cases}
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15\frac{1}{6}\implies \cfrac{15\cdot 6+1}{6}
\end{cases}\implies \cfrac{ \frac{6\cdot 2+1}{2}}{\frac{15\cdot 6+1}{6}}\\\\
-----------------------------\\\\
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4 years ago

Find the inverse function (find f^-1)

Reil [10]

Step-by-step explanation:

f(x) = (x-2)/(3x+3). Let y = f(x).

Then y = (x-2)/(3x+3).

y(3x+3) = x - 2

3xy + 3y = x - 2

3xy - x = -3y - 2

x(3y-1) = -(3y+2)

x = -(3y+2)/(3y-1)

Hence, the inverse of f(x) is -(3x+2)/(3x-1).

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3 years ago