a student scores 71 out of 100 on a test. if the maximum score on the next test is also 100 points, what score does a student need to maintain at least an average of 82?

Question

turingtest · Answer

do you know how to find the average of two things?

erniellyd28 · Answer

adding the 2 things together then dividing?

turingtest · Answer

right, so 72 plus something (the other score) divided by 2 is 82
can you write an equation for that?

erniellyd28 · Answer

71+100=71 and from there i got stuck and confuse lol

erniellyd28 · Answer

sorry

erniellyd28 · Answer

171 sorry

erniellyd28 · Answer

am i right?

turingtest · Answer

why did you set it equal to 71? the result we want is 82
also, you forgot to put the division by two in your equation

turingtest · Answer

71 plus something divided by the total number of things (which is two) equals the average we want, which is 82

turingtest · Answer

translate what I just wrote in english very carefully into math symbols, and see what you get

turingtest · Answer

how can I write "71 plus something" in mathematical notation?

erniellyd28 · Answer

100+71?

turingtest · Answer

no, that would be "one hundred plus seventy-one"
we want "seventy-one plus something"
How can I represent "something" in algebra?

turingtest · Answer

somethign we don't know...

erniellyd28 · Answer

so would i write 71+82?

turingtest · Answer

no, that would be "seventy-one plus 82"
we want "seventy-one plus something we don't know"
you have replaced "something we don't know" with "82," which is clearly something we *do* know.
How can I represent "something we don't know" in algebra? The answer is with a *symbol*, usually a letter like "x"
So try one more time please to translate "seventy-one plus something" into mathematical notation

erniellyd28 · Answer

71+x

erniellyd28 · Answer

im very sorry im very bad at math

erniellyd28 · Answer

71+x=82

turingtest · Answer

good!
now we need to add the "divided by the number of things" part
we have two things, so...?

turingtest · Answer

so now we want to translate "seventy-one plus something divided by two"

erniellyd28 · Answer

71+82 divided 2?

erniellyd28 · Answer

i am so lost im very sorry

turingtest · Answer

you changed x to 82... it was correct before

erniellyd28 · Answer

before i get on your nerves i will just let you go because now i am so lost and confused now lol