Answer:
say x is the original price so
x - (20x/100) = 720
720 is the balance we got after deducting the original price,
therefore; 720 = (80x/100)
You can simply solve for x now.
answer:
x = 900
The converse of the Pythagorean Theorem is: If the square of the length of the longest side of a triangle is equal to the sum of the squares of the other two sides, then the triangle is a right triangle. That is, in ΔABC, if c2=a2+b2 then ∠C is a right triangle, ΔPQR being the right angle.
Answer: The independent variable is what your are testing.
The dependent variable is your outcome is.
Step-by-step explanation:
Answer:
3800
Step-by-step explanation:
Variables:
O - Original cost
N - New cost
c - change factor
Step 1:
Recognize that if something decreases by 19%, it is worth 19% <em>less</em>
This means that the new price, fractionally, is 100% - 19% = 81%
So we can use c as 0.81 (81/100)
Step 2:
Write an equation to represent what is happening
N = O * c
Step 3:
Sub in what we know
3078 = O * 0.81
Step 4:
Rearange and solve
O = 3078 / 0.81 = 3800
Answer:
(8,11)
Step-by-step explanation:
A= (-8,11)
A'= (8,11)