△abc
has vertices at

a(3,4),
b(−1,1),

and
c(−2,5)
what is the approximate perimeter of
△abc?

The approximate perimeter of  △ABC is 12.34 units

Step-by-step explanation:

we know that

The perimeter of a triangle is the sum of its three length sides

so

the formula to calculate the distance between two points is equal to

step 1

Find the distance AB

we have

A(3,4), B(−1,1)

substitute the values

step 2

Find the distance BC

we have

B(−1,1),C(−2,5)

substitute the values

step 3

Find the distance AC

we have

A(3,4),C(−2,5)

substitute the values

step 4

Find the perimeter

d

step-by-step explanation:

hello and welcome!

so, when we see the words "proportional" along with a table, we need to know that we're looking numbers that divide by the same thing.

looking at this table, we simply have to do a trial and error, and divide to see which numbers have the same quotient. if you look at choice a & c, they both have equal quotients for three of the numbers, with one exception, so those can't be the answer. looking at b, there is no similarity, so that can't be it. then, we see d; if you divide all the numbers in the table, you'll see that they all divide by two, which is a proportional relationship, and our answer!

also, always remember that the x will always be the number that goes into y, and somewhere behind this table, is a formula. for this specific table, the formula would be:

since our x-value is being divided by two to get the y-value. and if they were to ask for more numbers in the series, this is the formula you would use to find them.

cut 138 centimeters off

step-by-step explanation:

250-112 = 138