+0  
 
+1
38
3
avatar+623 

i dont know how to approach these problems 

 

http://prntscr.com/laut7e

critical  Oct 26, 2018
 #1
avatar+90995 
+2

21.

The perimeter of a triangle =  the sum of the sides

 

So.....we need to solve this

 

x + ( x + 3)  + (x + 5)   = 26

 

Can you take it from there, critical ???   [ P.S......if so....post your answer and  I'll check it  ]

 

 

22.

Mmmm...this is a more interesting problem  !!!

 

 

The radiator holds 480  oz of fluid and leaks at 4 oz / min

So...the number of minutes it takes to  drain is  just  480  / 4   = 120  minutes  = 2  hrs

 

Since the truck travels at 35 mph...the distance it travels before the radiator is empty  is

 

35 mph x 2 hours  =   70  miles

 

 

cool cool cool

CPhill  Oct 26, 2018
 #2
avatar+623 
+2

21. 6

critical  Oct 26, 2018
 #3
avatar+90995 
+1

Correct....good job  !!!!

 

 

cool cool cool

CPhill  Oct 26, 2018

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