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3 years ago

(3x – 9)º (X + 7)º Value of X?

Mathematics

2 answers:

alexandr402 [8]3 years ago

4 0

Answer:

$\huge \boxed{X=8}$

Step-by-step explanation:

The value of x is ⇒ 3x-9=x+7

Solve 3x-9=x+7

Add by 9 from both sides of equation.

$\displaystyle 3x-9+9=x+7+9$

Simplify.

$\displaystyle 3x=x+16$

Subtract by x from both sides of equation.

$\displaystyle 3x-x=x+16-x$

Simplify.

$\displaystyle 2x=16$

Divide by 2 from both sides of equation.

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

Finally, simplify to find the answer.

$\displaystyle 16\div2=8$

X=8, which is our answer.

maks197457 [2]3 years ago

3 0

Answer:

If they're equal, x=8

Step-by-step explanation:

3x-9=x+7. Add 9 to each side and sibtract x from each side. This leaves 2x=16. Divide by 2 to isolate x. x=8

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3 years ago

Solve for b:4 = -2/3(5) + b

saveliy_v [14]

Answer:

$\frac{22}{3}$ = b

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Step-by-step explanation:

4 = - $\frac{2}{3}$ (5) + b

simplify

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now use inverse operations

4 = - $\frac{10}{3}$ + b

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4 years ago

6. Use synthetic division to completely factor y = x3 + 2x2 – 5x - 6 by x + 1.

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Answer:

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Step-by-step explanation:

attached

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3 years ago

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Question:

Solution:

Consider the following two functions:

$f(x)=2x+8$

and

$g(x)=x^2+2x-8$

Now, consider the following definition:

$(f-g)(x)=f(x)-g(x)$

thus, we get:

$\begin{gathered} (f-g)(x)=f(x)-g(x) \\ =\text{ (2x+8)-(}x^2+2x-8\text{)} \end{gathered}$

this is equivalent to:

$=\text{ 2x+8-}x^2-2x+8$

this is equivalent to:

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So that, we can conclude that the correct answer is:

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1 year ago