Mathematics
7 Online
OpenStudy (anonymous):
http://prntscr.com/67yk39
@phi
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OpenStudy (phi):
what did you get ?
OpenStudy (phi):
to do these, remember "per" translates to divide.
OpenStudy (anonymous):
So I do 4 / 26 for A ?
OpenStudy (phi):
yes miles per minute --> miles/ minutes or here, 4/26
OpenStudy (phi):
change to a decimal and round to the nearest 100th
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OpenStudy (anonymous):
4 / 26 = 0.1638 so rounded would be 0.17? @phi
OpenStudy (skullpatrol):
4/26 = 0.1538
OpenStudy (phi):
is your calculator broken ?
OpenStudy (anonymous):
What lol?
OpenStudy (phi):
also, when you round, look at the 3rd digit. if 4 or less, round down (not up)
here 0.1538
the 3 is 4 or less, so round down
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OpenStudy (anonymous):
So the answer for A is 0.15?
OpenStudy (phi):
yes
OpenStudy (anonymous):
How would I do B?
OpenStudy (skullpatrol):
same idea
OpenStudy (phi):
hopefully you have the idea: look for x per y
and figure out x/y
where x and y are units
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OpenStudy (skullpatrol):
"per" means " for each"
OpenStudy (anonymous):
12 / 27 ?
OpenStudy (anonymous):
B is 0.44?
OpenStudy (skullpatrol):
27/12
OpenStudy (anonymous):
2.25 ?
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OpenStudy (skullpatrol):
yes
OpenStudy (skullpatrol):
2.25 pounds for each dollar
OpenStudy (anonymous):
Can you help with two more?
OpenStudy (skullpatrol):
quick
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OpenStudy (skullpatrol):
ok, do you understand what "per" means?
OpenStudy (anonymous):
yes.
OpenStudy (skullpatrol):
what?
OpenStudy (anonymous):
14 / 4 ? or 4 / 14 ?
OpenStudy (skullpatrol):
the question asks for "per hour" so that means divided by hours
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OpenStudy (anonymous):
So 14 / 4 ?
OpenStudy (skullpatrol):
:D
OpenStudy (anonymous):
A = 3.5 ?
OpenStudy (skullpatrol):
yes
OpenStudy (skullpatrol):
$3.5/hr
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OpenStudy (skullpatrol):
You need to keep track of the "units"
OpenStudy (anonymous):
And is B = 0.11?
OpenStudy (anonymous):
Or B = 8.83 ?
OpenStudy (skullpatrol):
the are asking for acre/pound
OpenStudy (anonymous):
So 0.11?
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OpenStudy (skullpatrol):
6 acre / 53 pounds
OpenStudy (skullpatrol):
You NEED to write the units of acre and pound
OpenStudy (skullpatrol):
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