Recent content by kippy

How many milliters of .248 M HCl are needed to react with 1.36g of zinc to produce hydrogen gas

yes it does

(5-d)+(5+d) (5-2d)+(5+2d)

i need help- arithmetic sequences There many arithmetic sequences which seventh term equals 5. prove all of them have the same sum of their first 13 elemnets. find the sum i found the sum was 65 but i don't know how to prove it.

no language issue the problem was originally written in english exactly how i first posted it

thats what i thought, i get how its a circle but the question asks to proove the graph is a circumference, not to proove its a circle

i need help with prooves Question- prove that the graph x² + y² - 2x + 4y=0 is a circumference. find the center of it and the radius. i completed the squares and found the center and radius but how do i proove its a circumference.

okay i can complete the squares but how do i proove its a circumfrence

pre-cal proofs i need help with doing proofs. Question- prove that the graph of the equation x² + y² - 2x + 4y=0, is a circumference. find find the center of it and the radius.