Answer:
50
Step-by-step explanation:
<em>Substitute</em> 7 as x in the original equation, (9x-13)
<u>9(7)-13</u>
1) Multiply 9 and 7:
63-13
2) Subtract:
50
35,000
............................................
X=-15 because you have to add 3 on both sides
Answer:
See answers below
Step-by-step explanation:
During the Boston Marathon, a What are the unit rates for this situation? (How far can they run in 1 hour and how long does it take to run 1 mile?)
If a certain runner averages running 25 miles in 5 hours, then
25miles = 5hrs
To determine how far they can run in 1 hour, then;
X = 1hr
Divide both expressions
25/x = 5/1
5x = 25
X = 5miles
Hence the runner can run 5miles in an hour
Similarly if
25miles =1hr
1mile = y
25y = 1
Y = 1/25
Y = 0.04hrs
Hence the time taken to run 1mile is 0.04hrs
