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Example: y=kxy 1. R varies jointly as n and p. if p= 9 when r= 72 and n=8, find r when p= 12 and u=3 R-kap r=knp 72=h(8) (9) r-1(12)(3) (72=72) 1/72 36 K=1
Solve the following correctly. Show your Solution/s. use another sheet of paper to show your solutions.
1 R varies jointly as n and p. if p-9 when = 72 and n=8, find p when r= 12 and n=8.
2 The amount of gasoline used by a car varies jointly as the distance travelled and the square root of the speed Suppose a car used 25 liters on a 100km trip at 100km/h. about how many liters will it use on a 192 km trip at 64km/h?
3. Q varies jointly asr and s. if q= 18 when r=12 and s=2, find q when 5 and = 12. the electrical voltage V varies jointly as the current i and the resistance R. if V=100, l=10 and r=25, find when I= 50, V=500.
5. The area A of a triangle varies as the base B and the altitude H of the triangle. If a= 100sq. Cm. when b=10 and h-5, find the area of the triangle whose base is 8cm and whose altitude is 10 cm.​