Question

2. M(8, 7) is the midpoint of . The coordinates of S are (9, 5). What are the coordinates of R?

(16, 14)
(8.5, 6)
(10, 3)
(7, 9)
3.Find the distance between points P(8, 2) and Q(3, 8) to the nearest tenth.

14.9
61
7.8
11
4.The Frostburg-Truth bus travels on a straight road from Frostburg Mall to Sojourner Truth Park. The mall is 4 miles east and 4 miles north of the City Center. The park is 2 miles west and 4 miles south of the Center. How far is it from the mall to the park to the nearest tenth of a mile?

11.1 miles
10.0 miles
5.7 miles
4.5 miles

Answer 1

@johncooper

Answer 2

first question: take your midpoint's x and y and multiply by two then subtract S's x and y. you'll then have R's coordinates

Answer 3

IM SO CONFUSED

Answer 4

second question: the distance formula is \[d \sqrt{\left( x_{2}-x _{1} \right)^{2}+\left( y _{2}-y _{1} \right)^{2}} \]

Answer 5

for the first question what are you confused about?

Answer 6

i dont get the part of if im supposed to multiply 8and7 together or seperate

Answer 7

seperate

Answer 8

for ex

Answer 9

yes

Answer 10

8x2=x
x-9=?

Answer 11

that would be the x coordinate of R

Answer 12

ohh ok thanks

Answer 13

and the third problem: The city center is (0,0) on a graph. the mall is (4,4) and the park is (-2,-4). use the distance formula just like the second problem to find the answer

Answer 14

for the 2nd one i got 25+12=37 which i know is not right

Answer 15

alright lets work on that one

Answer 16

kk

Answer 17

so you know the distance formula

Answer 18

now take (8,2) first

Answer 19

put it into the formula

Answer 20

having 8 be x1 and 2 being y1

Answer 21

what next

Answer 22

then take the other problem and plug it into the same way except let 3 be x2 and 8 be y2

Answer 23

\[d \sqrt{\left( 3-8 \right)^{2}\left( 8-2 \right)^{2}}\] this is what you should have

Answer 24

i got it

Answer 25

so what is your answer?

Answer 26

\[5^2+6^2\]

Answer 27

it should be a -5

Answer 28

61

Answer 29

and remember to find the square root of that answer

Answer 30

i got it wrong the 1st time because i accidently multiplyed 6and 2

Answer 31

so what is your final answer?

Answer 32

why find the squ.........7.8

Answer 33

yep good job

Answer 34

and just do the same thing on the last question

Answer 35

i got another ?

Answer 36

what is it?

Answer 37

the third problem has 3 equations why if im going to do the distance formula

Answer 38

just do the distance from the park to the mall. ignore city central.

Answer 39

thanks for like the 100th time

Answer 40

nope problem