web2.0calc
 
+0  
 

Inequality Help

+7
2375
3
avatar

Here's the question: 

 

On a road trip from Buffalo, New York, to St. Augustine, Florida, a family wants to travel at least 250 mi in the first 5 h of driving. What should their average speed be in order to meet this goal? Write and solve an inequality.

 

Please help, and thanks in advance!!

 Sep 23, 2015

3+0 Answers

 #1
avatar
0

Average speed=Distance travelled/ hours spent driving=250/5=50 miles per hour. That's the average speed they must drive.

 Sep 23, 2015
 #2
avatar
0

But what is the inequality you write??

 Sep 23, 2015
 #3
avatar
0

5(2x-3)≥15x : Here is an inequality. You solve it as follows:

 

5(2x-3)≥15x   simplify the left side

 

10x - 15 ≥ 15x    add 15 to both sides........subtract 15x  from both sides

 

-5x ≥ 15    divide both sides by -5 and reverse the inequality sign

 

x  [less than or equal to] -3

 Sep 23, 2015

0 Online Users

Top Users

avatar+130517 CPhill moderator
avatar+33663 Alan moderator
avatar+15127 asinus moderator
avatar+2186 Bosco
avatar+1808 blackpanther
avatar+762 history
avatar+448 HiylinLink
avatar+265 CInsbstnkng
avatar+114 ikleyn
avatar+113 thatgirlaj
avatar+73 Clnsbstnkng

Sticky Topics