If you already have any two sides of a right angle then the Pythagoras theorem would help.
It goes like (Hypotenuse)² = (Side A)² + (Side B)².
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Hope this helps.
Answer:

Step-by-step explanation:
General equation of a line:

m is the slope, and c is the y-intercept:
m = 3, and c = 7
Answer:
53.2
Step-by-step explanation:
The bike is now $28
(70 x 0.4 = 28)