A triangle has angle measures 40 degrees, 40 degrees, and 100 degrees.

Which statements are true about the triangle? Select all that apply.
The triangle is acute.
The triangle is obtuse.
It is an isosceles triangle.
It is a scalene triangle.
It is an equilateral triangle.
The angles add up to 180°.

The lengths of all sides of a triangle are integers when measured in decimeters. one of the sides has length of 1 dm and another of 3 dm. find the perimeter of the triangle.'

Consider a bag that contains 220 coins of which 6 are rare indian pennies. for the given pair of events a and b, complete parts (a) and (b) below. a: when one of the 220 coins is randomly selected, it is one of the 6 indian pennies. b: when another one of the 220 coins is randomly selected (with replacement), it is also one of the 6 indian pennies. a. determine whether events a and b are independent or dependent. b. find p(a and b), the probability that events a and b both occur.

Extra points! find the missing dimension! need asap