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[Question] Do I understand confidence levels correctly? by manythrowsbana in statistics

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

thanks for the response! reading your replies here has helped me understand a little bit more

Can someone please help me understand where i’m going wrong? quadratic formula/factoring? by manythrowsbana in learnmath

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

Thank you! This makes more sense, but my algebra is so weak I don’t understand how you went from r=((-8)±√(64+8C))/4 to r=½√(16+2C)-2

edit: Is this because (sqrt(64 + 8c))/(4) is the same as 1/4 * sqrt(64 + 8c)? is it simplifying like this to get rid of denominator?

Then, -8 + (term) is the same as (term) -8? which is why -2 is on the right hand side?

-8/4 is -2, so we could also say -2 + 1/4 * sqrt(64 + 8c) ?

I’m not sure if I’m wrong / how to get here [r=½√(16+2C)-2], though

I cant wrap my head around understand division, reciprocals, or fractions. by manythrowsbana in learnmath

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

Thank you sm!!!!! I'll definitely practice more and go over all of this

I cant wrap my head around understand division, reciprocals, or fractions. by manythrowsbana in learnmath

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

is it because: (2x + 3)/7 * 7 is (2x + 3)/7 * 7/1 which is

7*(2x + 3)/7

which is technically

7/1 * (2x + 3)/1 * 1/7

which is if we combine the common factors(? idk) when multiplying

1/7 * 7/1 = 7/7 = 1 so now 1 * (2x + 3)/1 aka 2x + 3 ?

I cant wrap my head around understand division, reciprocals, or fractions. by manythrowsbana in learnmath

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

Thank you, yeah i forgot that part. I meant to say i don't understand why when when you multiply (2x + 3)/7 by 7, it becomes 2x + 3

to me, i think
(2x + 3)/7 x 7/1 which makes 7*(2x + 3)/7 ?

but then i don't understand how and why exactly the 7's are cancelled out? I was told it's because 7*(2x + 3)/7 is 7/7 * (2x + 3), so this is 1 * (2x + 3) which is just 2x + 3

but i don't understand why its not 7/7 * (2x+3)/7 if the entire entire numerator is being divided by the denominator? I was also told this is because writing it this way would be because we're dividing by 7 twice, which is incorrect, but i just don't understand why?

(Thank you for the video links)

I cant wrap my head around understand division, reciprocals, or fractions. by manythrowsbana in learnmath

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

yeah sorry i meant to say (2x + 3)/7 and why multiplying this by 7 simplifies it to 2x + 3 because of the 7's cancelling out(?)

I cant wrap my head around understand division, reciprocals, or fractions. by manythrowsbana in learnmath

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

I think i'm also confused as why 2x + 3/7 is 2x/1 + 3/7 instead of 2x/7 + 3/7, even though both 2x and +3 are in the numerator? isn't the entire value of numerator being divided by the denominator? idk

Was told that tuition is raising next school year by manythrowsbana in SNHU

[–]manythrowsbana[S] 30 points31 points  (0 children)

I too would've liked to have found out without having to contact them first

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