This is my math hw please check it for me
#can you guys check my math homework
lilac pike
rugged cliff
Correct but why did you reject the negative solution and wrote it in only 1 significant figure
lilac pike
The solution I needed was the positive one
lilac pike
I only wrote it in one sig fig because the exact answer is about 10.92 or smth so it rounds down
rugged cliff
That is 3 sf
I would skip the third line from the bottom so I'm not obliged to give both to 1 decimal place
west seal
lilac pike
Ong
rose gale
Where did you get (x-5)^2 from, surely x^2 +10x + 25= (x+5)^2
glossy barn
That is 3 sf
*4
frozen grail
This is my math hw please check it for me
if you would type a bit better, it would be more pleasant
frozen grail
idk if thats 9,9 or 9.9 or just 9x^2
glossy barn
looks like -4.9 to me
frozen grail
also square root is written above the entire thing ur rooting
not just like a part of it
this is 0.9?
glossy barn
has to be -4.9 right
frozen grail
idk it could be 4 it could be 9
lilac pike
That's 4.9
frozen grail
ok
glossy barn
yuh
bro I'm so paranoid Abt SIG fig cause physics
u lose a mark if it's the wrong sig fimig
rugged cliff
lol same but I think they only deduct a mark for that once for the entire paper
frozen grail
first way (left) obviously doesnt take us far, but its worth knowing, in other instances, right side is the way for this one
rugged cliff
what does the left side do
frozen grail
frozen grail
what does the left side do
its used for finding centers of geometrical shapes, intersections, ect and shit, and can ease the work some times
rugged cliff
oh cool
frozen grail
like (x-9)×(x-1)=19
rugged cliff
I think they are just learning how to complete the square
frozen grail
I think they are just learning how to complete the square
yeah they are, but this is gonna be handy later
like for stuff like this
and also its just a good skill to get under ur hands when tryna draw graphs, find definition intervals, range intervals ect.
and sometimes, when the solution are x∈Z this is just a way to find both/doubled roots
rugged cliff
why not (x-5)^2 - 15 = 0
frozen grail
works even better, yeah
we could go on
depends on what ur looking for based on the rest of the problem
frozen grail
It's 10.9 😑
and it is correct btw
lilac pike
For the problem we had to solve via completing the square
frozen grail
ic