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3 years ago

For which rational expression is –2 an excluded value of x?

Mathematics

1 answer:

statuscvo [17]3 years ago

4 0

Answer is A
X-3/x^2-4 has two excluded values 2, -2

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Point B is on line AC so that AB : BC = 2 : 1. Point D is on line AB so that AD : DB = 3 : 2. Find AD : DC

Leya [2.2K]

Firstly, we will draw figure

Let's assume

length of AC=x

we have

AB : BC = 2 : 1

so,

$AB=\frac{2}{3} x$

$BC=\frac{1}{3} x$

Point D is on line AB

and

$AB=\frac{2}{3} x$

AD : DB = 3 : 2

so, we get

$AD=\frac{3}{5} *\frac{2}{3} x$

$AD=\frac{2}{5} x$

$DB=\frac{2}{5} *\frac{2}{3} x$

$DB=\frac{4}{15} x$

now, we can locate these values

Firstly, we will find DC

DC=DB+BC

now, we can plug values

$DC=\frac{4}{15} x+\frac{1}{3} x$

$DC=\frac{3x}{5}$

we have got

$AD=\frac{2}{5} x$

now, we can find ratio

$\frac{AD}{DC} =\frac{\frac{2}{5} x}{\frac{3x}{5}}$

now, we can simplify it

$\frac{AD}{DC} =\frac{2}{3}$

so,

AD:DC=2:3...........Answer

5 0

3 years ago

Adding and Subtracting Functions F(x)=x^2+4 G(x)=x-1 Find (g+f)(x)

Lady_Fox [76]

Answer:

Step-by-step explanation:

$(g+f)(x)=g(x)+f(x)=x-1+x^2 +4=x^2 +x+3$ $x^2 +x+3$

4 0

2 years ago

G(n) = 2n + 2 f(n) = n^2-3 Find (g+f)(n) please show work

Mars2501 [29]

Answer:

2n + n² -1

Step-by-step explanation:

2n + 2 + n² - 3

2n + n² -1

Lemme know if I read the equation wrong :)

6 0

3 years ago

Pleaseeeeeeee I need help nowwwww

Tanya [424]

Answer:

(2)

Step-by-step explanation:

One property of a parallelogram is

• opposite angles are congruent, hence

∠L = ∠N and ∠M = ∠P

Using ∠L = ∠N, then

8x - 41 = 6x + 3 ( subtract 6x from both sides )

2x - 41 = 3 ( add 41 to both sides )

2x = 44 ( divide both sides by 2 )

x = 22

-------------

∠M = 2x + 1 = (2 × 22) + 1 = 44 + 1 = 45°

∠P = ∠M = 45° → (2)

6 0

4 years ago

Which statment descirbes the soloution to a equation a+5(2a-1)+3=11a-2

Andreyy89

Answer:

Any real number.

Step-by-step explanation:

I dunno what you're asking, but Im assuming you need what a equals to.

$a+5(2a-1)+3=11a-2\\a+10a-5+3=11a-2\\11a-2=11a-2\\$

The answer is any real number.

7 0

3 years ago