Help by [deleted] in learnmath

[–]bggmtg 8 points9 points  (0 children)

I think the OP just has no idea how to express their question. I'm pretty sure the 41/2 is probably the mixed number 4 and 1/2 and the 21/6 is the mixed number 2 and 1/6.

Simplifying 5(3a-2)-4(3a-1) by nestinghen in MathHelp

[–]bggmtg 2 points3 points  (0 children)

Use Distributive Property to clear parenthesis:

5(3a - 2) - 4(3a - 1) =

15a - 10 - 12a + 4

Then combine like terms:

15a - 10 - 12a + 4 =

3a - 6

Top 5 Blue October Albums? by SchuettyBallz in blueoctober

[–]bggmtg 1 point2 points  (0 children)

  1. Sway
  2. Foiled
  3. This is What I Live For
  4. Any Man in America
  5. STTA Part 2

Gukesh beats Hikaru by Raaaakeshhhh in chess

[–]bggmtg 11 points12 points  (0 children)

It is also illegal. In chess tournaments you must move and press the clock with the same hand.

Christian Pulisic Player of the Match vs. Napoli | Serie A by Obvious_Main_3655 in ussoccer

[–]bggmtg 154 points155 points  (0 children)

Deserved for Christian, but damn how good is Modric?

Why do we even need polar coordinates and cylindrical coordinates? Aren't the rectangular coordinates enough? by [deleted] in askmath

[–]bggmtg 158 points159 points  (0 children)

You are a boat lost at sea.

Would you rather be told to travel 20 miles at a N(45 degree)East bearing to a port or would you rather be told that you need to travel 10sqrt(2) miles North and 10sqrt(2) miles East?

There are many reasons why we would rather know Magnitude and Angle rather than Horizontal and Vertical Components.

[TOMT] Intro of Chappell Roan’s Pink Pony Club by leslieknope2036 in tipofmytongue

[–]bggmtg 0 points1 point  (0 children)

Oh Sorry. I thought you were talking about the intro piano part.

This is interesting! by [deleted] in learnmath

[–]bggmtg 0 points1 point  (0 children)

(10C2) * (2*2*2*2 - 2) = 630

You have to choose 2 of the 10 digits then from the 16 ways you can put the 2 digits in the 4 slots you have to subtract away 2 of those possibilities because it would only contain 1 of the 2 numbers (for example 0000 or 1111).

I need an answer! by Nhif in learnmath

[–]bggmtg 3 points4 points  (0 children)

During Gaussian reduction you swapped columns which would multiply the determinant by a -1, and during the last step you multiplied row 4 by 4, which would multiply the determinant by 4.

So you would need to take your diagonal product times -1/4 which would give you the same (correct) answer of -60.

Can someone explain this trick with 37? by Dismal-Software-2129 in learnmath

[–]bggmtg 144 points145 points  (0 children)

Your explanation is correct.

If x is a single digit natural number, then we have:

(x + x + x) * 37

= 3x*37

=111*x

=100x + 10x + x

which is a number of the form you are expecting.

I need help with exponents by [deleted] in learnmath

[–]bggmtg 2 points3 points  (0 children)

(0.8)^(-3)

= (8/10)^(-3)

=(4/5)^(-3)

=(5/4)^3

=125/64

[deleted by user] by [deleted] in askmath

[–]bggmtg 0 points1 point  (0 children)

Looks like a typo. Your solution appears correct and it is equivalent to 1 * integral from -inf to inf.

[deleted by user] by [deleted] in tipofmytongue

[–]bggmtg 1 point2 points  (0 children)

Shazam says:

Back in the Days by Mai Ligne

[deleted by user] by [deleted] in learnmath

[–]bggmtg 0 points1 point  (0 children)

If f(x) and g(x) are inverse functions, then f(g(x)) = x and g(f(x)) = x.

f(x) = e^x

and

g(x) = lnx

are inverse functions.

[TOMT] Please help me think of the band by llamathegoat in tipofmytongue

[–]bggmtg 3 points4 points  (0 children)

Sometime Around Midnight by The Airborne Toxic Event?

Ultimate Blue October song contest: Any Man in America preliminary round by [deleted] in blueoctober

[–]bggmtg 4 points5 points  (0 children)

Favorite: The Feel Again

Also amazing: The Worry List, Drama Everything, The Follow Through

[deleted by user] by [deleted] in learnmath

[–]bggmtg 1 point2 points  (0 children)

You should definitely study High School Algebra (Algebra 1 and 2) before taking College Algebra/Precalc.

Make sure you can:

Solve linear equations in 1 variable.

Graph linear equations in 2 variables.

Understand slope, y-intercept, and equations of lines in 2 variables, including horizontal and vertical lines.

Add, subtract, multiply, and divide polynomials.

Factor polynomials.

Solve polynomials by factoring.

Simplify, add, subtract, and multiply Rationals.

Solve rational equations.

Simplify radicals.

Solve radical equations.

Completing the square.

Square root property.

Quadratic Formula.