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Use a calculator to find an approximate solution to the equation. Round any intermediate work and steps to three decimal places. Show all of your steps in solving the equation for full credit. 2ln (x + 2.8) = 3.2

Solve for x:
2 log(x+2.8) = 3.2

2 log(x+2.8) = 2 log(x+14/5) and 3.2 = 16/5:
2 log(x+14/5) = 16/5

Divide both sides by 2:
log(x+14/5) = 8/5

Cancel logarithms by taking exp of both sides:
x+14/5 = e^(8/5)

Subtract 14/5 from both sides:
Answer: | 
| x = e^(8/5)-14/5

Original Alaska Dude: I LIVE in Wasilla right now, right above Wonderland Park.

No, this place isn't really a chat room, and some of the people who run this site sometimes get ornery and cranky when people use this site as a chat place. But, I use  this place as a chat room.

All jumbled up like your brain!!!!!!!

Just take the natural log of 22.8=3.126760...................etc.

whats the answer to3\x=-9, I guess you mean: 3/x=-9?

3/x=-9 cross multiply

-9x=3 divide both sides by -9

x=3/-9

x=-1/3

pay attention in class retard . You should know that by now .

Look it up in your Math book. It is ALL written there.

how do i simplify 2+/-*2+/-*2+/-*

=2

How do i simplify this expression? 6t^2-5.4-3.5t+2.5t^2+3t

t (8.5t-0.5)-5.4, OR,

8.5 (t-0.0294118)^2-5.40735, OR,

8.5 (t-0.827008) (t+0.768184)

Why? So that they will keep you busy and stay out of mischief!!!.

melody thx for ans. can you try this with herons formula

19t+8-t-20=0

Solve for t:
18 t-12 = 0

Factor constant terms from the left hand side:
6 (3 t-2) = 0

Divide both sides by 6:
3 t-2 = 0

Add 2 to both sides:
3 t = 2

Divide both sides by 3:
Answer: | 
| t = 2/3

melody nice solution but try 30-60-90 theorm for easy steps

which of the following values is a zero of f(x)=2x^3-5x^2-12x

Solve for x:
2 x^3-5 x^2-12 x = 0

The left hand side factors into a product with three terms:
x (x-4) (2 x+3) = 0

Split into three equations:
x-4 = 0 or x = 0 or 2 x+3 = 0

Add 4 to both sides:
x = 4 or x = 0 or 2 x+3 = 0

Subtract 3 from both sides:
x = 4 or x = 0 or 2 x = -3

Divide both sides by 2:
Answer: | 
| x = 4 or x = 0 or x = -3/2

What is the question??!!

area and volume so thats all...

Just divide 1/7 and you will get a recurring decimal.

12^2+x^2=(x+8)^2

Solve for x:
x^2+144 = (x+8)^2

Expand out terms of the right hand side:
x^2+144 = x^2+16 x+64

Subtract x^2+16 x+64 from both sides:
80-16 x = 0

Factor constant terms from the left hand side:
-16 (x-5) = 0

Divide both sides by -16:
x-5 = 0

Add 5 to both sides:
Answer: | 
| x = 5

There's no equation

-4b-(-8)=24  simplify

-4b + 8 = 24     subtract 8 from both sides

-4b = 16     divide both sides by -4

b = -4

5.5

We need to copmare these two things :

1000(1 + .055/12)¹²   ≈  $ 1056.41

And

1000(1 + .054/365)³⁶⁵  = $1055.48

Looks like the monthly rate is slightly better....

Type  solve(5x^2+15x+1=0) into the calculator on the home page here and then press enter (or =).

I would take the spotlight as the origin (0, 0) and let the direction directly towards the wall be the x-axis, so that the wall is at x = 100.  

When theta = 45° then the spot will be at (x, y) = (100, r*sin(45°))

Since r = 100/cos(45°) at that point, then (x, y) = (100, 100*sin(45°)/cos(45°)) = (100,100)

Then the radial velocity vector will be in a direction at 45° to the horizontal in the positive x and positive y direction; the angular velocity vector will be in a direction at 45° to the horizontal in the negative x and positive y direction.

the answer is 0 rember it is exactly like subtacting every time you add a number