Answer:
f=-5
Step-by-step explanation:
1) Add 12 to both sides
2) You should get f=-5
Pythagorean theorem is applied to the right triangles.
Pythagorean theorem is a²+b²=c².
a is the length is the leg, b is also a leg and c is the hypotenuse
Well, scence you don't know how many quarters are in a stack of 5mm, ill give a variable answer...there's 10x as many quarters in the stack of cm than the stack of millimeters, because 5mm=1/2 cm, and 5/.5=10