5! I did this one last year!
Answer:
1) -7/4
2) 4/7
3) -1/5
Step-by-step explanation:
1) A parallel line would have the same gradient so:
4y = -7x +3
y =![\frac{-7}{4}x +\frac{3}{4}](https://tex.z-dn.net/?f=%5Cfrac%7B-7%7D%7B4%7Dx%20%20%2B%5Cfrac%7B3%7D%7B4%7D)
So a parallel line would have the gradient of
.
2) A perpendicular line would have the inverse reciprocal of the gradient so multiplying the 2 gradients would equal -1 so:
Initially Gradient = -7/4
-7/4 x Perpendicular line = -1
Perpendicular line = -1 x 4/-7
Perpendicular line = 4/7
3) Using the same principle, the perpendicular gradient would be -1/5x
To find out how many did not raise money, we need to find the percentage that did not raise money and multiply that by the total number of members.
If 95% raised money, 5% did not raise money.
0.05 x 80 = 4 members did not raise money
let's firstly convert the mixed fractions to improper fractions and then add them up, bearing in mind that the LCD from 12 and 6 will just be 12.
![\bf \stackrel{mixed}{14\frac{11}{12}}\implies \cfrac{14\cdot 12+11}{12}\implies \stackrel{improper}{\cfrac{179}{12}}~\hfill \stackrel{mixed}{3\frac{1}{6}}\implies \cfrac{3\cdot 6+1}{6}\stackrel{improper}{\cfrac{19}{6}} \\\\[-0.35em] ~\dotfill\\\\ \cfrac{179}{12}+\cfrac{19}{6}\implies \stackrel{\textit{using the LCD of 12}}{\cfrac{(1)179~~+~~(2)19}{12}}\implies \cfrac{179+38}{12}\implies \cfrac{217}{12}\implies 18\frac{1}{12}](https://tex.z-dn.net/?f=%5Cbf%20%5Cstackrel%7Bmixed%7D%7B14%5Cfrac%7B11%7D%7B12%7D%7D%5Cimplies%20%5Ccfrac%7B14%5Ccdot%2012%2B11%7D%7B12%7D%5Cimplies%20%5Cstackrel%7Bimproper%7D%7B%5Ccfrac%7B179%7D%7B12%7D%7D~%5Chfill%20%5Cstackrel%7Bmixed%7D%7B3%5Cfrac%7B1%7D%7B6%7D%7D%5Cimplies%20%5Ccfrac%7B3%5Ccdot%206%2B1%7D%7B6%7D%5Cstackrel%7Bimproper%7D%7B%5Ccfrac%7B19%7D%7B6%7D%7D%20%5C%5C%5C%5C%5B-0.35em%5D%20~%5Cdotfill%5C%5C%5C%5C%20%5Ccfrac%7B179%7D%7B12%7D%2B%5Ccfrac%7B19%7D%7B6%7D%5Cimplies%20%5Cstackrel%7B%5Ctextit%7Busing%20the%20LCD%20of%2012%7D%7D%7B%5Ccfrac%7B%281%29179~~%2B~~%282%2919%7D%7B12%7D%7D%5Cimplies%20%5Ccfrac%7B179%2B38%7D%7B12%7D%5Cimplies%20%5Ccfrac%7B217%7D%7B12%7D%5Cimplies%2018%5Cfrac%7B1%7D%7B12%7D)
80 cuz if u look after 7 it's 6 if it's 5 or bigger than 5 u round it u if it's not u put 0 i hope this helps=)