64/7=9.14285714. It takes 9.14285714 or about 9 minutes to run a mile.
44/9=4.88888889. It takes 4.88888889 or about 5 dollars per hour.
Hoped I helped!
Step-by-step explanation:
3 1/2 x 2 1/2 x 2 1/2
=?
? ÷1/2= answer
Find the rate of change, (y2-y1)/(x2-x1), from the data given...
(2.16-1.26)/(12-7)=0.18
(1.26-0.72)/(7-4)=0.18
Since the rate is constant, this is a linear equation of the form y=mx+b. Furthermore, since 0 pencils cost 0, b=0, so the cost of the pencils is simply the number of pencils times 18 cents...
c(p)=0.18p (cost with respect to pencils is 0.18 times the number of pencils)
The statement "y varies inversely as x means that when x increases, y decreases by the same factor. In other words, the expression xy is constant :
x*y = k
k is the variation constant.
Just substitute the values in that formula :
16*9 = 4*4*9 = 172.
So the variation constant here is 172.
In order to find the equation of variation of y, you should change the equation i gave you.
y = k/x
y= 172/x
Hope this helps !
Photon