Whats the answer i need it for 65 points

24

Step-by-step explanation:

L is at -3 and M is a 3, the difference between those is 6 meaning LM is 6, M is at 3 and N is at 9 meaning MN is 6. So we have 6 and 6 right now equaling 12, and LN is a total of 12 units, so 12 plus 12 equals 24

26 units

Step-by-step explanation:

Perimeter is the sum of the side lengths of the polygon. In this case, it's:

LM + MN + LN

We need to use the distance formula here to find LM and MN. The distance formula states that to find the distance between points and , we must use the equation:

First find LM. L has coordinates of (-3, 2) and M has coordinates (3, 5). So, the distance between the two is:

Then this simplifies to: ≈ 6.71 ≈ 7

Now, find MN. M has coordinates (3, 5) and N has coordinates (9, 2). So, the distance between the two is:

This simplifies to: ≈ 6.71 ≈ 7

Finally, LN is easily calculated because L and N are at the same y-coordinate, so we can just count how many units apart they are: 12.

Finally add these three numbers together: 7 + 7 + 12 = 26

The perimeter is thus about 26 units.

Hope this helps!

y=−9/2x+10

step-by-step explanation:

let's solve for y.

0−9x−2y=−20

step 1: add 9x to both sides.

−9x−2y+9x=−20+9x

−2y=9x−20

step 2: divide both sides by -2.

−2y

−2

=

9x−20

−2

y=

−9

2

x+10

answer is x<