Question

Find the y value for the point that splits segment EF in half if point E is located at (5, −2) and point F is located at (−1, 3).

1

0.5

4.5

2

Answer 1

You are looking for the midpoint. Do you know the formula for that?

Answer 2

\[midpt = (\frac{ x _{1}+x _{2} }{ 2 },\frac{ y _{1}+y _{2} }{2 })\]

Answer 3

I don't know sorry...:/ I'm clueless

Answer 4

ok, use your points and fill it in like this:

Answer 5

\[(\frac{ 5+(-1) }{2 },\frac{ -2+3 }{ 2})\]

Answer 6

would it be 4.5?

Answer 7

-2 + 3 is 1, and you still have to divide it by 2. So it would be .5.

Answer 8

I think I get it now can we try another problem together?

Answer 9

The midpoint is (2, 1/2).

Answer 10

Yes, we can do another.

Answer 11

Find the perimeter of the following shape, rounded to the nearest tenth:
12.5

15.7

16

16.5

Answer 12

Thank you by the way

Answer 13

You're welcome btw!

Answer 14

You need to find the length of one short side and one long side. Then double them, cuz you have a rectangle, and a rectangle has two short sides the same length and two long sides the same length. so we got lucky here and need to only find the length on one short and one long.

Answer 15

The distance formula needs to be used here. Do you know it?

Answer 16

I don't know it :/

Answer 17

That's ok. You're learning a lot today!

Answer 18

Okay and that's good I need it

Answer 19

\[d=\sqrt{(x _{2}-x _{1})^{2}+(y _{2}-y _{1})^{2}}\]

Answer 20

Your points for a short side are A and B and the coordinates for A are (5,5) and B (7,3).

Answer 21

for perimeter u add right? Or times

Answer 22

The distance formula looks like this with your points:\[d=\sqrt{(7-5)^{2}+(3-5)^{2}}\]which translates to \[d=\sqrt{(2)^{2}+(-2)^{2}}\]

Answer 23

okay that's easy

Answer 24

perimeter is addding, btw.

Answer 25

The length of AB is \[AB=\sqrt{8}\]

Answer 26

Now let's do BC in the same way.

Answer 27

0,3 and 3,7

Answer 28

\[d=\sqrt{(3-7)^{2}+(0-3)^{2}}\]or\[d=\sqrt{(-4)^{2}+(-3)^{2}}\]or \[d=\sqrt{25}\]and d = 5 for the long side.

Answer 29

So here's your rectangle:

Answer 30

Perimeter is 5 + 5 + sqrt 8 + sqrt 8

Answer 31

16.10

Answer 32

Are you supposed to find the exact value or are you supposed to leave a radical sign in the answer?

Answer 33

Oh I see by the answer choices that you multiply it in. Ok, got that much. Hold on.

Answer 34

Do you see the answer there? It is there, rounded to the nearest tenth.

Answer 35

It's not 16.1 though.

Answer 36

is it 16

Answer 37

\[\sqrt{8}=2.828427125\]You have two sides that length so multiply that by 2 to get 5.656854249

Answer 38

Now add the 2 sides that measure 5 each (10 total) to that 5.656854249 and get 15.65685425, which is 15.7 rounded to the nearest tenth.

Answer 39

I got 16 when I added it then I rounded it to the nearest tenth

Answer 40

You couldn't have gotten an even 16 because the square root of 8 is an irrational number and the decimal goes on forever. You would HAVE to have a decimal if you did it right.

Answer 41

Look back over the work I showed for you to see how I did it. I typed it all out step-by-step. I have to go to work now. ok?

Answer 42

The answer is 15.7...promise.

Answer 43

oh I think I added it wrong and okay thank you!

Answer 44

You are so welcome!

Answer 45

when u get back I have 3 more questions I need help with..

Answer 46

The distance formula can be used to prove a triangle has

congruent sides

a right angle

parallel sides

congruent angles

Answer 47

When the coordinates (2, 3), (4, 4), (6, 3), and (4, 2) are joined, which shape is formed?

Parallelogram

Rectangle

Rhombus

Square

Answer 48

Line AB contains points A (0, 1) and B (1, 5). The slope of line AB is

−4

negative 1 over 4

1 over 4

4

Answer 49

@IMStuck please help me again