1,620 to the nearest ten ? Please don't answer if you know your wrong !

Geometry in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.

3questions show how you solved the problem 1. subtract & simplify (–y2 – 4y – 8) – (–4y2 – 6y + 3) 2.multiply and simplify 2x2y3z2 · 4xy4x2 3.multiply and simplify (x – 4) (x2 – 5x – 6)

Graph the following system of linear inequalities. identify at least two points in the solution: y < 5 - 2x | x + 5y > -7