Question

Help On Three Question Please!!!!!! Will Medal And Fan!

Answer 1

@phi

Answer 2

I would plot the points, and connect the dots as a first step

Answer 3

ok like this?

Answer 4

in a parallelogram, the opposite sides are equal. It is easy to find the length of the top and bottom sides (you count)
what do you get for the length of the top side?

Answer 5

6? on the top side.

Answer 6

yes, and 6 for the bottom also

for the "sides" you need to use the distance formula
do you know it?

Answer 7

Yes I Do

Answer 8

can you find the distance between (2,-2) and (5,3) ?

Answer 9

\[\sqrt{9+25}\]

Answer 10

yes, so \( \sqrt{34}\)

Answer 11

yes now what?

Answer 12

that is also the lenght of the other side
perimeter is the sum of the 4 lengths
\[ 6 + \sqrt{34}+ 6 + \sqrt{34}\]

Answer 13

you can combine "like terms" to make that a bit nicer

Answer 14

Wait so you add them?

Answer 15

yes, add the lengths. that is the definition of perimeter: total distance "around" the figure

Answer 16

\[12+\sqrt{68} \]

Answer 17

It is Greek: peri around, meter = measure or length

Answer 18

sqrt(a) + sqrt(a) is not the same as sqrt(2*a)
all you can do is say: I have one sqr(34) plus another sqr(34). How many sqr(34)'s do I have ?

Answer 19

2 sqrt(34) ?

Answer 20

yes
so
\[ 12 + 2\sqrt{34} \]
is the answer they want

Answer 21

ok so same on this one right?

Answer 22

same idea, except opposite sides need not be equal , so it's more work
First plot the points to see "what is what"

Answer 23

So this?

Answer 24

yes.
you can use the distance formula for all 4 sides, but for 3 of them, you can just count

Answer 25

So Top Side = 3
Bottom Side = 9
Right Side = 5

Answer 26

now the last side, you use the distance formula

Answer 27

\[\sqrt{36+25}\]

Answer 28

what do you get for the perimeter?

Answer 29

\[\sqrt{61}\]

Answer 30

that is the length of the 4th side. the perimeter is the sum of the 4 sides.

Answer 31

I assume you mean 17+sqr(61)

Answer 32

yes

Answer 33

so it is \[17+\sqrt{61}\]

Answer 34

yes

Answer 35

is that it?

Answer 36

yes, that is the perimeter of the figure, in "exact" form (we could change the sqr(61) to a decimal, but it would only be approximate)

Answer 37

This Last One

Answer 38

Top And Bottom are 7

Answer 39

yes, you can do these problems

Answer 40

\[\sqrt{25+64}\]

Answer 41

\[\sqrt{89} \] for both sides right and left

Answer 42

\[14+2\sqrt{89}\]

Answer 43

looks good

Answer 44

@phi you taught me how to do this!

Answer 45

Thanks!