+0  
 
+1
205
2
avatar+2308 

Is the second one rational? (I'm guessing B)

 Mar 27, 2018
 #1
avatar
+2

The product of A is rational = -8/21

The product of B is also rational =2 x 3 =6

The product of C is irrational =sqrt(7) / 7 =0.377964473........is irrational

The product of D is rational = 7 x .07 =0.49

 

 

Both 8 and 1/8 are rational and their sum = 8+1/8 =8 1/8 = 65/8 is rational. Or B, of the 4 choices.

 Mar 27, 2018
 #2
avatar+164 
+1

Yes, because 1/8 and 8 are both rational. Therefore it is B since that would add up to 65/8 or 8 1/8

 Mar 27, 2018

30 Online Users

avatar
avatar
avatar
avatar

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.