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Activity 1.4 COMBINED as ONE
A. Translate each statements into variation equation.
__________1. W varies jointly as (c) and the square of (a) and inversely as (b).
__________2. P varies directly as the square of i and inversely as x.
__________3. The pressure (P) of a gas varies directly as its temperature (t) and invesely
as its volume (v).
__________4. The electrical resistance R of a wine varies directly as its lenght (l) and
inversely as the square of its diameter (d).
__________5. The stiffness of a beam (s) varies joinlty as its breadth (b) and the depth
(d) and inversely as the square of the length (l).
B. Solve the following.
If (r) varies directly as (s) and inversely as the square of (v), and r=2 when s=18
and v=2, find:
___________6. r when v= 3 and s= 27
___________7. s when v= 3 and r= 4
___________8. v when r= 1 and s= 36
___________9. r when v= 8 and s= 4
___________10. s when v= ½ and r= 7/
2
Sagot :
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