Which of the following statements is true?

Select right answer

1.Perpendicular lines must cross, but intersecting lines do not have to cross.

2.Perpendicular lines never cross, but intersecting lines always cross.

3.Perpendicular lines must cross to form ninety degree angles, but intersecting lines cross to form angles of varying measures.

4.Perpendicular lines must cross to form obtuse angles, whereas intersecting lines must cross to form acute angles.

Option (3)

Step-by-step explanation:

Perpendicular lines: Perpendicular lines are the lines that intersect each other at right angles

Intersecting lines: Intersecting lines are the lines that intersect each other at a point to form angles but vertically opposite angles are equal

Hence , from above conclusion we can write Perpendicular lines must cross to form ninety degree angles, but intersecting lines cross to form angles of varying measures.

Hence , Option (3) is correct answer

1gm = 1000mg so 0.1gm = 1000mg

first, convert the weight to kg

160lb * 1kg/2.2lb = 72.7kg

next, the dose

72.7kg * 100mg/kg = 7270mg

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.