Ihave to multiply then check my work by switching factors
693*83 i got 7623 but don’t know how to check work by switching factors .

What is the length of the missing leg in this right triangle? 18 mm 24 mm 26 mm 32 mm

Reflect the point (7,0) across the y-axis

Find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible