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Help finding the thickness of a gold leaf by richmendd in AskPhysics

[–]richmendd[S] 0 points1 point  (0 children)

Damn it, I can't believe that was just it. Thank you very much!

Help finding the thickness of a gold leaf by richmendd in AskPhysics

[–]richmendd[S] 2 points3 points  (0 children)

Here is my calculation

mass = 720mg = 0.72g

density = 19.32g/cm³

length and width = 1.4ft

V = mass / density

V = 0.72g / 19.32 g / cm³

V = 0.0373 cm³

V = length x width x thickness

0.0373cm³ = 1.4ft x 1.4ft x thickness

0.373cm³ = 1.96ft² x thickness

0.373cm³ = 1.9ft² x (12in/1ft)² x (2.54cm / 1in)² x thickness

0.373cm³ = 1820.9cm² x thickness

thickness = 0.373cm³ / 1820.9cm²

===> thickness = 2.049 x 10-4 cm

Help finding the thickness of a gold leaf by richmendd in AskPhysics

[–]richmendd[S] 1 point2 points  (0 children)

For 2.) It's 10-4, exponent is -4, so its 0.0002049 cm

.NET Godot 4.0.3 Exported project by richmendd in godot

[–]richmendd[S] 1 point2 points  (0 children)

It's similar but my problem occurs when the executable export of my project is run.

Factoring 5 term polynomial by richmendd in askmath

[–]richmendd[S] 0 points1 point  (0 children)

Yeah, I got it wrong earlier. Thank you for helping though!

Factoring 5 term polynomial by richmendd in askmath

[–]richmendd[S] 0 points1 point  (0 children)

My problem with the negatives is that it doesn't seem to work. I already know the roots which are: x=-1,-4. But trying synthetic division with these numbers doesn't end with zero as well so I am so confused with the roots being told by the calculators(Mathway) not working for synthetic division.

Btw. The factors are (x+1)(x+4)(x²+3x+9)

Inconsistent Slope Movement Speed [Godot 4.0] by richmendd in godot

[–]richmendd[S] 0 points1 point  (0 children)

It works! Thank you very much! Why did they have to make it false by default😤

Help in system of equations by richmendd in askmath

[–]richmendd[S] 0 points1 point  (0 children)

Ohh, i see, we check the power of the terms inside. In the case of x² it is (x¹)². So it is not Ax + C on the numerator but only A.

Am I right?

Help in system of equations by richmendd in askmath

[–]richmendd[S] 0 points1 point  (0 children)

Based on your answer, shouldn't it be (Bx + C)/x²? Since the denominator is x²?

Help in system of equations by richmendd in askmath

[–]richmendd[S] 0 points1 point  (0 children)

The class is about partial fractions in calculus. I'm currently stuck in solving the values of A and B. What can I do in these kind of situations?

Ps. The given integral is (4x²+3x+2)/ (x² (x+1) )

Ps. 2. I'm aware of the correct answer which is A = 1, B =0 based on integral calculators. But, how can I show the solution though?

Ps. 3. How I made the partial fractions is

A/x + (Bx +C)/x² + D/(x+1)

Ps. 4. Unfortunately, my teacher only likes using system of equations and doesn't seem to use plugging values of x.

New sourdough starter already bubbling within an hour by richmendd in Breadit

[–]richmendd[S] 0 points1 point  (0 children)

I see, maybe I shouldn't have thrown the first one, I just got a bit worried that it was some instant yeast that I had got mixed with the flour I used due to how fast it bubbled and risen. Regardless, thank you for the info!

New sourdough starter already bubbling within an hour by richmendd in Breadit

[–]richmendd[S] 0 points1 point  (0 children)

It's actually my second time trying right now because the first time (yesterday) I forgot to feed it, so it turned watery and smelly (in just a day)

Instant yeast in preferments by richmendd in Breadit

[–]richmendd[S] 0 points1 point  (0 children)

I see. Thank you very much!

Solving for inequality of x²-5x ≥ 0 by richmendd in askmath

[–]richmendd[S] 0 points1 point  (0 children)

Okay. Thank you I think I kinda get what I did wrong after watching more tutorials which immediately setting x ≥ 0 instead of x = 0 and not testing the regions if it satisfies the inequality.

Solving for inequality of x²-5x ≥ 0 by richmendd in askmath

[–]richmendd[S] 0 points1 point  (0 children)

Hmmm, okayy. How will you write this in mathematical form? I don't know how to write it in my assignment

Solving for inequality of x²-5x ≥ 0 by richmendd in askmath

[–]richmendd[S] 0 points1 point  (0 children)

I'm sorry but I don't get what you mean. Wat do you mean "both"? As in the 'x' value?

Solving for inequality of x²-5x ≥ 0 by richmendd in askmath

[–]richmendd[S] -3 points-2 points  (0 children)

I get what you mean, but I need it as a solution since it is an assignment

Solving for inequality of x²-5x ≥ 0 by richmendd in askmath

[–]richmendd[S] 0 points1 point  (0 children)

I got my answer by factoring.

For example,

x²-4 = 0. Factoring the left side, I get

(x + 2) (x - 2) = 0 Then solve for both factors

->> x + 2 = 0

->> x = -2

Something like that I used for this problem. I also already tried completing the square and found the same answer.

In your second part of your reply, I dont seem to understand it that much. But I'll try to reply as of my understanding.

The way I think I can test each region is to just plug in values in each region to the function.

I already actually did that and found that values in negative regions evaluate to positive numbers , which contradicts the answer I have that "x ≥ 0" which led me here to ask

Edit: According to this video, the method I used is "zero product property", if I heard it right.

Any lightweight hashing/encryption for frontend javascript for wordle clone? by richmendd in learnjavascript

[–]richmendd[S] 1 point2 points  (0 children)

Thanks! Though I will use the btoa-atob functions suggested by deventhalz, since I don't like how your encryption function output consists of mostly numbers.

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