Why is 8.8 different to 8.08​

If a and b are the measures of two first quadrant angles and sin a = 4/9 and sin b = 2/5 find sin(a+b).

Atriangular bandana has an area of 46 square inches. the height of the triangle is 5 3 4 inches. enter and solve an equation to find the length of the base of the triangle. use b to represent the length of the base.

The multiplication property of zero states that the product of any number and 0 is 0. what must be true about either a or b to make ab=0