#No clue where to start

100 messages · Page 1 of 1 (latest)

pale python
hardy jettyBOT
#
  1. Wait patiently for a helper to come along.
  2. Once someone helps you, say thank you and close the thread with:
+close
  1. Feel free to nominate the person for helper of the week in #helper-nominations
pale python
#

@tidal nacelle

#

lucky me it’s a algebra question

tidal nacelle
#

Ya brother 👍🏻

pale python
#

yo u still there bro @tidal nacelle

tidal nacelle
#

ya so listen in first questionit is saying when it hit the ground means h=0

#

-0.1d^2 + 3d = 0

#

d(-0.1d + 3) = 0

#

d = 0 or -0.1d + 3 = 0.

pale python
#

ohhh

#

that makes so much more sense

#

an d then u just factorise

#

isn’t the second answer -2.9?

#

i mean

#

isn’t it

#

-3 divided by -.1 do isolate d

#

or am i completely wrong here

tidal nacelle
#

ya its that way becuze u cann't take 0 as a answer

#

btw are u guys allow to use calculators?? asking becuz i am curious

pale python
#

yeah we are

pale python
pale python
tidal nacelle
pale python
#

oh okay cool i got it right

#

thanks for showing me how to do it tho

tidal nacelle
#

When d = 0, it means the ball is at the starting point or right above the player so it means he didn't even kick thts why we don't take it

pale python
#

the question after that says when the height is at 20

#

do we just multiply everything by 20?

tidal nacelle
#

by which method u solving

pale python
#

any method is fine

tidal nacelle
#

quadratic formula??

pale python
#

yeah

#

that one

tidal nacelle
#

-0.1d^2 + 3d = 20

#

-0.1d^2 + 3d - 20 = 0

pale python
#
  • 20 both sides
#

nice

#

9/4

tidal nacelle
#

answer may be 10 or 20

pale python
#

how did u work that out C

#

?

#

can the formula (x+b/2)^2 -(b/2) only be used when the coefficient of A is 1?

tidal nacelle
pale python
#

oh that’s why

#

it looked weird to me

#

would u use the 4ac formula ?

#

and if so how would that work

tidal nacelle
#

well in quadractic formula u don't require to convert coeiffienct to 1 but if u don't use calculator stick with your main formula

pale python
#

i got -10 and -20

#

but how do u get negative distance

tidal nacelle
pale python
#

oh i used the quadratic formula is that okay ?

tidal nacelle
#

d = (-(3) ± √((3)^2 - 4(-0.1)(-20))) / (2(-0.1))

pale python
#

yeah

tidal nacelle
#

quadratic formula hava -b at start

pale python
#

oh that’s why

#

yeah ur right

#

my mistake

tidal nacelle
#

👍🏻

pale python
#

by the way

tidal nacelle
pale python
#

thank u for taking the time out of ur day for helping me

#

i really appreciate it

#

ur a good person brother

tidal nacelle
pale python
#

hey @tidal nacelle did i do something wrong here i feel like i miscalculated the value of b and A as i’ve never had a question like this before

tidal nacelle
#

Ya

#

Wait let me

#

See

pale python
#

on an unrelated note how do you do this question

IMG_1423.jpg
tidal nacelle
pale python
#

woohoo

#

thanks

tidal nacelle
pale python
#

yeah

tidal nacelle
pale python
#

yeah i know that but is that it?

#

is that just the answer

#

because it says give answers to 1 decimal place where appropriate

tidal nacelle
#

Look at second graph

#

That graph is not touching 1 or 3

pale python
#

NVM

#

yeah so we just solve for x

tidal nacelle
#

ya 👍🏻

#

Well answer may be 2.9 or -0. 9 or something I don't know fix value

pale python
#

also

#

apparently

#

-y^2

#

is -y* -y

#

not -y*y

#

idk if u told me that or someone else

#

else*

pale python
#

because negative isn’t touching the x axis but if it’s 0 it has 1 solution and if it’s positive it has two x roots

#

thats what i learnt atleast

tidal nacelle
#

Well ya 👍🏻