How would you write 10^4 x 10^4 x 10^4 with exponents instead of repeating multiplication

12 point are triangles pqr and stu congruent? what is the congruency that proves they are congruent? what is the perimeter of triangle pqr?

Which statement justifies why angle ebc measures 90?

Afamily has five members. a mom, a dad, two sisters, & a brother. the family lines up single file. what is the probabillity that the mom is at the front of the line