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3 years ago

If 2x+8=16, what is the value of x+4?

Mathematics

1 answer:

True [87]3 years ago

7 0

Answer:

$\boxed{ \bold{ \huge{ \boxed{ \sf{8}}}}}$

Step-by-step explanation:

First, finding the value of x

$\sf{2x + 8 = 16}$

Move 8 to right hand side and change it's sign

$\dashrightarrow{ \sf{2x = 16 - 8}}$

Subtract 8 from 16

$\dashrightarrow{ \sf{2x = 8}}$

Divide both sides by 2

$\dashrightarrow{ \sf{ \frac{2x}{2} = \frac{8}{2} }}$

Calculate

$\dashrightarrow{ \sf{x = 4}}$

Value of x is 4

Now, Substituting / Replacing the value of x in order to find x+4

 $\sf{x + 4}$ 

plug the value of x

$\dashrightarrow{ \sf{4 + 4}}$

Add the numbers : 4 and 4

$\dashrightarrow{ \sf{8}}$

Hope I helped!

Best regards! :D

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3 years ago

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kvv77 [185]

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Step-by-step explanation:

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3 years ago

Read 2 more answers

Write the polar form of a complex number in standard form for <img src="https://tex.z-dn.net/?f=25%5Bcos%28%5Cfrac%7B5%5Cpi%20%7

Masja [62]

Answer:

Standard Complex Form : $-\frac{25\sqrt{3}}{2}+\frac{25}{2}i$

Step-by-step explanation:

We want to rewrite this expression in standard complex form. Let's first evaluate cos(5π / 6). Remember that cos(x) = sin(π / 2 - x). Therefore,

cos(5π / 6) = sin(π / 2 - 5π / 6),

π / 2 - 5π / 6 = - π / 3,

sin(- π / 3) = - sin(π / 3)

And we also know that sin(π / 3) = √3 / 2. So - sin(π / 3) = - √3 / 2 = cos(5π / 6).

Now let's evaluate the sin(5π / 6). Similar to cos(x) = sin(π / 2 - x), sin(x) = cos(π / 2 - x). So, sin(5π / 6) = cos(- π / 3). Now let's further simplify from here,

cos(- π / 3) = cos(π / 3)

We know that cos(π / 3) = 1 / 2. So, sin(5π / 6) = 1 / 2

Through substitution we receive the expression 25( - √3 / 2 + i(1 / 2) ). Further simplification results in the following expression. As you can see your solution is option a.

$-\frac{25\sqrt{3}}{2}+\frac{25}{2}i$

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3 years ago

If 2x+8=16, what is the value of x+4?​

If 2x+8=16, what is the value of x+4?