Need help asap!! The sum of two numbers is 49 and the difference between these two numbers is 9
a) Formulate two equations using the given information.

Eqn 1:
Eqn 2:

b)Solve simultaneous equations using elimination method.

c)State whether these two linear equations are linear or non-linear...

Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. how fast is the height of the pile increasing when the pile is 14 ft high? (round your answer to two decimal places.) ft/min

Suppose m: angle a =77 degrees what is the measure of a complement of a complement of angle a, what is a conclusion you can draw about a complement of a complement of an angle

Taina went to the toy store and spent $21.05 on a board game, $2.75 on coloring books, and $13.22 on a model airplane. about how much money did taina spend in the toy store?