You could use distance formula three times to calculate the length of each side. Add the three lengths to find the perimeter. However, (see image) if you look at a graph of these points, two of the sides are the hypotenuse of a right triangle that have known, integer values--Pythagorean triples. The sides are 3-4-5 and the other is 6-8-10. We use the Pythagorean theorem to find the third side. See image.

11.18 + 5 + 10

= 26.18 units

3 0

3 years ago

Justin walked his dog 2 blocks west,6 blocks north,2 blocks east and 6 blocks south. Then he walked his other dog along the same

BigorU [14]

32 in all
because it said he walked the the other dog the same amount as well so 2x2,2x6,2x2,2x6

2x2=4,2x6=12,2x2=4,2x6=12

12+4+12+4=32 blocks in all

8 0

4 years ago

Mark and Henry win some money and share it in the ratio 1:3. Mark gets ?9. How much did Henry get?

podryga [215]

Henry got $27 dollars because he won 3 times as much money as Mark and 9x3=27

5 0

3 years ago

How many three-digit numbers can you make if you are not allowed to use any other digits except 1 and 2? (You may use 1 and 2 in

KonstantinChe [14]

The first digit can be 1 or 2.

For each one ...

The second digit can be 1 or 2.

For each one ...

The third digit can be 1 or 2.

That's (2•2•2)= 8 different possibilities.

8 0

3 years ago