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Mathematics 17 Online
OpenStudy (18jonea):

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

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

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

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

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

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

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?

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):

- -

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

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