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PSAT 1.37 Math Diagnostic. Which of the following forms of the function f(x) would best reveal the number of employees that should be hired to maxi...
How Tall Would the Boxes Have to Be? 184 Views
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Description:
PSAT 1.7 Math Narrative Walkthrough. How tall would the boxes have to be?
Transcript
- 00:00
Thank you We sneak and here's your shmoop too sure
- 00:05
brought to you by cardboard boxes as the great kenny
- 00:08
rogers once said campbell you gotta know how to fold
- 00:13
some cardboard boxes It's old boxes dance mother gives him
- 00:18
a room clinton ultimatum and he ends up cleaning five
Full Transcript
- 00:21
hundred cubic feet of junk out of his room If
- 00:23
dan wants to take out all the junk in on
- 00:26
ly five identical boxes that have a base of five
- 00:29
feet squared how tall would the boxes have to be
- 00:33
and hear the potential answers All right dan is awfully
- 00:37
particular about his garbage It's garbage Dan what do you
- 00:41
care What size boxes there in it's Not like you're
- 00:43
giving it away for christmas Laura are you all right
- 00:46
So there's five hundred cubic feet of garbage And dan
- 00:48
wants back all this trash away in five identical boxes
- 00:51
Well the math there is pretty easy Each box will
- 00:54
have to contain five hundred divided by five or one
- 00:56
hundred cubic feet of well crap hole up from here
- 00:59
though We'll need to use one of our trusty formulas
- 01:02
In this case the one for a rectangular prison A
- 01:05
box volume equals length times With times height equals lula
- 01:11
all right We're not seeing any length or with measurements
- 01:13
in the original problem but it does tell us that
- 01:16
the base has an area of five square feet and
- 01:19
we hopefully recognize that the area is the same as
- 01:22
length times width So there are two pieces of our
- 01:24
formula right there since all we're missing now is the
- 01:27
height we can plug in chuck by substituting one hundred
- 01:30
for the volume and five for length times With that
- 01:34
leaves us with one hundred equals five times the height
- 01:37
And when we divide both sides by five we get
- 01:40
h equals twenty answer Choice Be wow twenty foot tall
- 01:44
boxes Good luck getting your friendly sanitation workers to take
- 01:47
those away on garbage day Dan In fact you'll be
- 01:50
lucky if you still have a mailbox on thursday morning
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