A diagonal of a cube measures 15 cm and the length of an edge of the cube is square root 75 cm. What is the length of the diagonal of a face of the cube? Round to the nearest tenth. ~ 7.1cm

~ 12.2cm

~ 13cm

~ 15cm

19. 1.5 + T ≤ 5

T is less than or equal to 3.5

20. 40 + 2m ≥ 100

m is greater than or equal to 30

21. We can have the equation:
x + 1 = x + 2 - 1
This would result to:
x + 1 = x + 1
which have the same terms on both sides.
Further, the equation would be:
0 = 0