+0  
 
0
46
2
avatar

82.) a varies directly as b and inversely as the square of c, and a=10, when b=8 and c=2. Find a when b=20 and c=5.

 

83.) During a canoe trip, Roberto paddled twice as many hours as Edward, and Jim paddled for one hour. If the three of them paddled less than a total of ten hours, what is the number of hours Roberto could have paddled?

 Aug 17, 2020
 #1
avatar+26856 
0

a ~ b/ c2  k    k is proprtionality constant    calculate k by subbing in the initial values

 

10 = 8/2^2   k

k =5

 

a = 5b/c2

a = 5(20)/52  = .........

 Aug 17, 2020
 #2
avatar+26856 
+1

e       and   r = 2e   and  j=1  <10

e + 2e + 1 <10

3e<9

e <3       soooo    r   <   6   

 Aug 17, 2020

16 Online Users

avatar
avatar
avatar