pre calc

[spare comet]

ignore the file pls It won't delete for some reason

[dry cedar]

What is your question?

[spare comet]

(x+1)^2+(y+4)^2=36

how do I go about finding the intercepts if there radicals?

[dry cedar]

intercepts at the x-axis and y-axis?

[spare comet]

yes

[dry cedar]

x-axis means to set y = 0
y axis means to set x = 0

if you look at a coordinate system it makes sense

at the x-axis y is 0
and at the y-axis x is 0

[spare comet]

ok I have another question not pertaining to this at all, which way easier then this. this post is technically for my shy friend.

I'm assuming your pretty good at multiplication

[dry cedar]

go on

[spare comet]

when it comes to multiplication do you use a formula to calculate or do you memorize the multiples of each number up to a certain point?

[dry cedar]

you can memorize up until 20

(i do up until 12 iguess)

[spare comet]

how did you go about memorizing them?

[dry cedar]

it starts with elementary

when you do it quite often through the years you just know

but logic helps too

[spare comet]

logic?

[dry cedar]

like if i dont know 9 times 12, I do 12 times 10 in my head which is easy it's 120 and then I can subtract 12 which results to 108

give your shy friend either some table (he should learn at least up to 10)

or he should start some exercises where you decompose numbers into prime factors or factors

[spare comet]

thx for this, imma screenshot this

know anything about this?

The question: A Ferris wheel has a maximum height of 235 feet and a wheel diameter of 220 feet. Find an equation for the wheel if the center of the wheel is on the y-axis and y represents the height above the ground.

[dry cedar]

draw the wheel

on a paper

equation for a circle is $(x-m_x)^2 + (y-m_y)^2 = r^2$

[restive comet]

adonhs

[dry cedar]

if the diamter is 220 what is the radius?