Easy question! First one to answer gets brainliest! 2x + 5 = 21

Mathematics

2 answers:

tangare [24]2 years ago

6 0

$2x + 5 = 21$

Subtract both sides 5

$2x + 5 - 5 = 21 - 5$

$2x = 16$

Divide both sides by 2

$\frac{2x}{2} = \frac{16}{2} \\$

$x = 8$

madam [21]2 years ago

4 0

Answer:

Step-by-step explanation:

To determine the value of "x", we need to isolate the "x" variable completely. The first step in isolating the variable is to remove the constant on the L.H.S. This can be done by subtracting 5 both sides.

⇒ $2x + 5 = 21$

⇒ $2x + 5 - 5 = 21 - 5$

⇒ $2x = 16$

The last step in isolating the "x" variable is to isolate the cooeficient of x. This can be done by dividing the cooeficient of x both sides.

⇒ $2x = 16$

[Cooeficient of x is 2]

⇒ $\frac{2x}{2} = \frac{16}{2}$

⇒ $x = \frac{16}{2} = 8$

In conclusion, the value of the "x" variable is 8.

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g The following scatterplot shows the 20 top-selling cars with their weight on the horizontal axis and their miles per gallon (m

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scatterplot relating to the question is attached below.

Answer: Negative ; Strong

Step-by-step explanation:

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