1,000 times great. 50,000/50 = 1000
1/2 mile / 1/5 hour = x miles/ 1 hour
using cross products
1/2 * 1 = x * 1/5
multiply by 5 on each side
1/2*5 = x
x = 5/2 miles
x = 2 1/2 miles
Varying inversely means y=a number divided by x
find the number: 7=k/5 =>k=35
so the equation is y=35/x
Answer:
Area of trapezium = 1/2 * h (a+b)
here, 480= 1/2 *15*(20+b)
(20+b)=960/15
or, b=64-20
therefore, b= 44
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Hope u got it...xd
