Question

Please help I do not understand
I will give a medal

Answer 1

The diameter of a circle drawn on a coordinate grid has one of its end points at (-3, 2) and the other end point at (6, -4). Leena performed the steps shown to find the length of the diameter.

Step 1. x1 = -3, y1 = 2, x2 = 6, y2 = -4
Step 2. Distance = Distance is equal to the square root of all of x2 minus x1 the whole square minus y2 minus y1 the whole square.
Step 3. Distance = Distance is equal to the square root of all of 6 plus 3 the whole square minus -4 minus 2 the whole square.
Step 4. Distance = Distance is equal to the square root of all of 9 square minus -6 the whole square.
Step 5. Distance is approximately 6.71

In which step did Leena first make an error?

Step 1, because she substituted the incorrect values for x2 and y1.

Step 3, because she added the x coordinates instead of subtracting them.

Step 2, because she used the incorrect formula to find the length.

Step 5, because she found the square root of 45 instead of the square root of 9.

Answer 2

so, do you know the distance formula?

Answer 3

no :C

Answer 4

ok well :/
\(\bf \text{distance between 2 points}\\
d = \sqrt{(x_2-x_1)^2 + (y_2-y_1)^2}\)

Answer 5

so the first step is wrong?

Answer 6

I see nothing wrong with 1
let's check 2, see anything wrong?

Answer 7

i dont really know

Answer 8

well, let's take a look at 2

Step 2. Distance = Distance is equal to the
square root of all of x2 minus x1 the whole square
minus
y2 minus y1 the whole square.

Answer 9

so it is B cuz i have to submit this in 1 min lol

Answer 10

heehe

Answer 11

?

Answer 12

lemme show you the formula again => \(\text{distance between 2 points}\\
d = \sqrt{(x_2-x_1)^2 + (y_2-y_1)^2}\)

lemme show you the 2nd step
\(\text{Step 2. Distance = Distance is equal to the}\\
\text{square root of all}\\
\text{of x2 minus x1 the whole square}\\
{\bf\text{ minus }}\\
\text{y2 minus y1 the whole square.}
\)

Answer 13

so it is b right?

Answer 14

she didn't add the "x" components, so can't be "b"

Answer 15

ok i got it right as a

Answer 16

do u no this one


Which statement about the centroid of a triangle is always true?

It divides an altitude of a triangle into two parts where one part is 2 times the length of the other.

It divides a triangle into two parts of equal area.

It is located inside the triangle.

It is located at the midpoint of a median.

Answer 17

http://www.mathwords.com/c/c_assets/centroid.jpg

Answer 18

what u need help on go to youtube and just type in math wrods

Answer 19

Look at triangle KLM.


http://learn.flvs.net/webdav/assessment_images/educator_geometry_v14/pool_Geom_3641_0209_13/image0024e1b4754.jpg


Which statement must be true?

The three angle bisectors of the triangle will pass through point O.

O is the orthocenter of the triangle and can lie either inside or outside a triangle.

The perpendicular bisector of side KL will pass through point O.

O is the center of the largest circle that can be drawn inside the triangle.

Answer 20

number 3

Answer 21

I guss?

Answer 22

A triangle can be classified by its angles and by its sides.

Part 1: Use these two ways of classification to describe a right isosceles triangle.

Part 2: Name a triangle with only a different angle classification as a right isosceles. Identify one similarity and one difference between this new triangle and the right isosceles triangle.

Answer 23

do u have link?

Answer 24

that way I can help u

Answer 25

http://wiki.answers.com/Q/How_can_a_triangle_be_classified_in_two_ways

Answer 26

ok i got tht one

Answer 27

what about

Describe the process to construct an acute scalene triangle with vertices PQR using only a compass and straightedge, where Q is a point on a horizontal line segment XY.

Answer 28

I believe it's You can classify a triangle by its sides, or by its angles medals

Answer 29

this is my last one

Answer 30

Describe the process to construct an acute scalene triangle with vertices PQR using only a compass and straightedge, where Q is a point on a horizontal line segment XY.

Answer 31

draw a line XY and name the end Q and R open your compass to greater then the midpoint; arc it from both end and where the arcs cross draw a line; this line is then perp to XY

Answer 32

did this help

Answer 33

yes

Answer 34

give me medals

Answer 35

ok i am gonna add another question and i will give u medal there ok :D

Answer 36

ok