One tenth of a line measures 5.5cm. find the total length

What is the equation of a line passing through the point (6,1) and parallel to the line whose equation 3x=2y+4

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

The marked price of an article is 25% above its selling price and the cost price is 30% less than its marked price . find the discount percent and gain percent. only a brainlest can solve it i will mark you brainlest