Answer:
15(n-1)-45
Step-by-step explanation:
Increases by 15, so sequence is arithmetic, and goes to positive.
1st term is -45
so 15(n-1) gives us first term.
Reply for any questions I got you
Answer:

Step-by-step explanation:


Put x as y-6 in the second equation.



Factor.



It has to be a positive integer.


Substitute y as 11.



Answer:
because it is a triangle we square the lenght and equate to the other side,and square all the other side
X²=20²+10²
X=√20²+10²
=22.36m
Answer:
$625
Step-by-step explanation:
to find the original divide the sale price by the decreased percentage. 125/%20(or .20)
Answer: The price elasticity of the demand for skateboards = 0.6.
Step-by-step explanation:
Since we have given that
Original price of skate boards = $200
Quantity of skate board = 10
New price of skate boards = $300
Quantity of skate board = 7
Since we know that "Price of commodity is inversely related to quantity demanded."
So, price elasticity of demand is given by

Hence, the price elasticity of the demand for skateboards = 0.6.