If 1/a+1/b+1/c=1/(a+b+c) then prove that 1/a⁷+1/b⁷+1/c⁷=1/(a⁷+b⁷+c⁷)​

Flashback to semester a. are triangles pqr and stu congruent? what is the congruency that proves they are congruent? what is the perimeter of triangle pqr? show your work.

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

Aright triangle has an area of 21 m2. the dimensions of the triangle are increased by a scale factor of 4. what is the area of the new triangle