Answer:
Graph y=42.50 x and check that the graph is a straight line that goes through (0,0)
Step-by-step explanation:
we know that
A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form
or ![y=kx](https://tex.z-dn.net/?f=y%3Dkx)
In this problem we have
![k=42.50](https://tex.z-dn.net/?f=k%3D42.50)
so
therefore
![y=42.50x](https://tex.z-dn.net/?f=y%3D42.50x)
Graph y=42.50 x and check that the graph is a straight line that goes through (0,0)
Answer:
D
Step-by-step explanation:
Over 6 is the blue and red bars
the blue bar has 4 people
the red bar has 2 people
2+4=6
D
Answer:
none
Step-by-step explanation:
there would be no solutions because 39 does not equal 15
Answer: x=4
Step-by-step explanation:
similar triangle so corresponding parts are similar
![\frac{5}{10} = \frac{2x-1}{14}](https://tex.z-dn.net/?f=%5Cfrac%7B5%7D%7B10%7D%20%3D%20%5Cfrac%7B2x-1%7D%7B14%7D)
cross multiply
70 = 20x-10
80 = 20x
x = 4
Answer:
7425 inches^2
Step-by-step explanation:
825 inches (length) multiplied by 9 inches (width) to get 7,425 inches^2, squared because we are dealing with area.