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3 years ago

PLS PLS PLS HELP THIS IS AN ALGEBRA 2 QUESTION

Mathematics

1 answer:

iren2701 [21]3 years ago

3 0

Answer:

look

Step-by-step explanation:

When she simplified her radical she put 5x*2x and 12 squared

what she should ahve done is 5x*4x^2 square 3x

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Solve the following inequality 36> -2(x+4)+14

amid [387]

Answer:

x> − 15, could be wrong but i hope this helped!

Step-by-step explanation:

4 0

3 years ago

Solve this rational equation

tino4ka555 [31]

Answer:

Step-by-step explanation:

$\text{Domain:}\\\\x-4\neq0\ \wedge\ x-2\neq0\ \wedge\ x^2-6x+8\neq0\\\\x\neq4\ \wedge\ x\neq2\ \wedge\ x^2-4x-2x+8\neq0\\\\x\neq4\ \wedge\ x\neq2\ \wedge\ x(x-4)-2(x-4)\neq0\\\\x\neq4\ \wedge\ x\neq2\ \wedge\ (x-4)(x-2)\neq0\\\\x\neq4\ \wedge\ x\neq2\ \wedge\ x-4\neq0\ \wedge\ x-2\neq0\\\\\boxed{D:x\neq4\ \wedge\ x\neq2}$

$\dfrac{1}{x-4}+\dfrac{x}{x-2}=\dfrac{2}{x^2-6x+8}\\\\\dfrac{1(x-2)}{(x-4)(x-2)}+\dfrac{x(x-4)}{(x-4)(x-2)}=\dfrac{2}{(x-4)(x-2)}\\\\\dfrac{x-2+x(x-4)}{(x-4)(x-2)}=\dfrac{2}{(x-4)(x-2)}\iff x-2+x(x-4)=2\\\\x-2+(x)(x)+(x)(-4)=2\\\\x-2+x^2-4x=2\qquad\text{subtract 2 from both sides}\\\\x^2-3x-4=0\\\\x^2-4x+x-4=0\\\\x(x-4)+1(x-4)=0\\\\(x-4)(x+1)=0\iff x-4=0\ \wedge\ x+1=0\\\\x-4=0\qquad\text{add 4 to both sides}\\x=4\notin D\\\\x+1=0\qquad\text{subtract 1 from both sides}\\x=-1\in D$

8 0

3 years ago

HELPLPLPLP <br> SOMEONE EXPLAIN

lesya [120]

Answer:

646.0 cm^3

Step-by-step explanation:

The volume of this cube with side length 8 cm is (8 cm)^3, or 512 cm^3.

The volume of the hemisphere (half sphere) is

V = (1/2)(4/3)(pi)(4 cm)^3 (since half of the diameter, 8 cm,

V = (2/3)(3.14)(64 cm^3), or is the radius)

V = 133.86 cm^3, or approximately 133.9 cm^3.

The volume of the entire solid is (512 + 133.9) cm^3, or 646.0 cm^3

6 0

3 years ago

Find the surface area of the cube shown below

noname [10]

Answer:

the answer is 37.5cm^2

8 0

3 years ago

I am a four digit number I have two in the 1000 place the hundred digit is two greater than the Thousand digits the tens digit i

iogann1982 [59]

Answer:

Step-by-step explanation:

2×1000 + (2+2)×100 + (2+2+2)×10 + (2+2+2+2) = 2468

5 0

3 years ago