ShmoopTube

00:00

Thank you Using multiplication of inverse to solve equations allah

00:07

shmoop whenever there's a snowstorm windstorm sandstorm or any kind

00:11

of storm your parents go a little crazy Stocking up

00:14

on canned goods Right now the stack of cans in

00:17

the basement is about eleven feet high Your basement's pretty

00:21

roomy it's ceiling is twenty feet high Who if the

00:24

tower of cans grows three quarters of a foot each

00:28

month how many months will it take for all those

00:31

canned beets and carrots to reach the ceiling Cheerier options

00:39

First we need to write this out in an equation

00:43

Okay so we'll describe this as current height of the

00:46

kansas eleven feet plus the growth rate which is three

00:50

quarters of a foot a month Time's number of months

00:54

for which we'll use emma's the variable Equals height of

00:59

the ceiling which is twenty feet we're solving for a

01:03

number of months so that value is here's our finished

01:07

equation First we need to subtract eleven from each side

01:12

to simplify this thing That leaves us with three force

01:17

em on the left and nine on the right in

01:21

order to get rid of the fraction we need to

01:22

multiply each side by the inverse of the fraction in

01:26

verse means to flip the fraction over kind of like

01:28

multiplying by its opposite In this case the multiplication of

01:33

inverse would be for over three so multiply both sides

01:36

by four over three that cancels out the three forces

01:39

left leaving us with them Multiply nine by four over

01:44

three to get thirty six over Three Simplify that to

01:48

get m equals twelve and the answer is b So

01:53

it looks like you have a year before your basement

01:55

is totally full Look at the bright side If a

01:58

disaster does wipe out your house you can live in

02:00

a can for food and shelter in one convenient place 00:02:04.89 --> [endTime] No

Full Transcript