What is the correct rule for the pattern?8000,400.20.1

The measure of each base angle will be 50 degrees.

What is an Isosceles Triangle?

An isosceles triangle is a triangle where two sides are equal to each other which also makes the angles opposite them equal to each other.

The other side that is not congruent is called the base and the angle opposite that is called the vertex angle.

Given that an isosceles triangle, with a vertex angle of 80 degrees we need to find the base angles.

So the base angles in an isosceles triangle are equal, so using the angle sum property of a triangle, we get,

2 × base angles = 180° - 80°

2 × base angles = 100°

base angles = 50°

Hence the measure of each base angle will be 50 degrees.

Learn more about isosceles triangle click;

brainly.com/question/29774496

#SPJ2

6 pencils are in 1 pack. & 18 pencils are in 3 packs.

What is division?

Division is the process of splitting a number or an amount into equal parts.

Division is one of the four basic operations of arithmetic, the ways that numbers are combined to make new numbers. The other operations are addition, subtraction, and multiplication.

here, we have,

There are 36 pencils in 6 packs.

Igor wants to know how many pencils are in 1 pack.

i.e. we have to 36/6

                       =6

Elsa wants to know how many pencils are in 3 packs.

i.e. we have to 3*6

                      =18

Hence, 6 pencils are in 1 pack. & 18 pencils are in 3 packs.

To learn more on division click:

brainly.com/question/21416852

#SPJ2

Answer:

.

Step-by-step explanation:

Given  : 3.21

To find : Explain how to write the rational number.

Solution : We have given  3.21

We can remove the decimal.

We can see there are two numbers after decimal so, we write the 100 in denominator.

.

So, this is the .

a = 321 , b =100

Therefore, .