eslie used the diagram to compute the distance from Ferris to Dunlap to Butte. How much shorter is the distance directly from Ferris to Butte than the distance Leslie found?
https://nnds-li.brainhoney.com/Resource/19791663,8AE/Assets/assessmentimages/geo%20part%202%20u1l6%202.jpg
87 mi
84 mi
123 mi
36 mi
@welshfella
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OpenStudy (18jonea):
@amistre64
OpenStudy (amistre64):
um, a^2 + b^2 = c^2
sooo, sqrt(c) - (a+b) is the difference right?
OpenStudy (amistre64):
ack, sqrt(a^2+b^2) - (a+b)
forgo to include the ^2 on c
OpenStudy (18jonea):
so 60 x 60 + 63 x 63= 7569
OpenStudy (18jonea):
87 miles
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OpenStudy (amistre64):
sqrt(60^2 + 63^2) - (60+63)
im not getting 87
OpenStudy (18jonea):
3600 = 3969= 7569
OpenStudy (18jonea):
- 123= 7446
OpenStudy (amistre64):
good, sqrt(7569) is?
OpenStudy (18jonea):
86.3
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OpenStudy (18jonea):
thats not one of my answers
OpenStudy (amistre64):
87, 60+63 is 123
so the difference is
123 - 87
OpenStudy (amistre64):
sqrt(7569) = 87
123 - 87 is the difference
OpenStudy (18jonea):
so 87 is my amswer
OpenStudy (amistre64):
of course not
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OpenStudy (amistre64):
are we reading the same question?
OpenStudy (18jonea):
yes
OpenStudy (amistre64):
then why are you getting 87 for an answer?
OpenStudy (18jonea):
sorry the answer is 36
OpenStudy (amistre64):
thats better
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OpenStudy (18jonea):
Thanks What is the image of the point (4, –2) after a rotation 270° clockwise about the origin?
(4, 2)
(2, 4)
(–4, 2)
(–2, 4)
OpenStudy (amistre64):
rotate is -90 degrees
OpenStudy (18jonea):
would the x or y change
OpenStudy (amistre64):
both
OpenStudy (amistre64):
you are missing something in your options
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OpenStudy (18jonea):
what do you mean
OpenStudy (amistre64):
either the options are wrong or your question is stated wrong
OpenStudy (amistre64):
what quadrant is (4,-2) in?
OpenStudy (18jonea):
4
OpenStudy (amistre64):
and if we rotate it by -90, what quadrant do we end up in?
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OpenStudy (18jonea):
i think is 2,4
OpenStudy (18jonea):
1?
OpenStudy (amistre64):
|dw:1431298214432:dw|
OpenStudy (amistre64):
what are the sign of our x andy values in that quadrant?
OpenStudy (18jonea):
- -
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OpenStudy (amistre64):
none of your options are - -
OpenStudy (amistre64):
either the options are worng, or your point is wrong
OpenStudy (18jonea):
i dont know ill just ask my teacher
OpenStudy (18jonea):
For the coordinate plane, which equation describes the locus of points equidistant from (–1, 3) and (3, –1)?
y – 3 = –(x + 1)
y = x
y = -x
y + 1 = x – 3
is this one y= x
OpenStudy (amistre64):
its advisable to ask new questions in a new posting