Answer: Let me try to figure this out but this is not 7-8 grade math level
Step-by-step explanation:
Answer:
30% of the pages are arithmetic, or 108 pages
Step-by-step explanation:
50% are on algebra = 180 pages
360 x .5 = 180
20% are on geometry = 72 pages
360 x .2 = 72
30% are on arithmetic = 108
180 + 72 + 108 = 360 pages
50% + 20% + 30% = 100%
1,691,040,000
Hope this helps
Answer:
-4
Step-by-step explanation:
The given equations are as follows:
![\[\frac{1}{2}x+\frac{1}{4}y=5\]](https://tex.z-dn.net/?f=%5C%5B%5Cfrac%7B1%7D%7B2%7Dx%2B%5Cfrac%7B1%7D%7B4%7Dy%3D5%5C%5D)
![\[2x +\frac{3}{8}y=5\]](https://tex.z-dn.net/?f=%5C%5B2x%20%2B%5Cfrac%7B3%7D%7B8%7Dy%3D5%5C%5D)
The coefficient of x in the second equation is 2.
So in order to eliminate x we need to multiply the first equation by a value so that the coefficient of x becomes -2.
Since the coefficient of x in the first equation is \[\frac{3}{8}\], it needs to be multiplied by -4.
So the required multiplier for the first equation is -4
The constant of proportionality k is given by k=y/x where y and x are two quantities that are directly proportional to each other. Once you know the constant of proportionality you can find an equation representing the directly proportional relationship between x and y, namely y=kx, with your specific k. (i looked up this explanation but not sure if it’s right.. if it’s wrong let me know:) )
