First off, what's the slope of "r" anyway,
![\bf y=\stackrel{slope}{-\cfrac{1}{2}}x-4](https://tex.z-dn.net/?f=%5Cbf%20y%3D%5Cstackrel%7Bslope%7D%7B-%5Ccfrac%7B1%7D%7B2%7D%7Dx-4)
.
low and behold, since "r" is in slope-intercept form, notice, it has a slope of -1/2.
now, any line perpendicular to "r", will have a
negative reciprocal slope to it, that is,
![\bf \textit{perpendicular, negative-reciprocal slope for slope}\quad -\cfrac{1}{2}\\\\ negative\implies +\cfrac{1}{{{ 2}}}\qquad reciprocal\implies + \cfrac{{{ 2}}}{1}\implies 2](https://tex.z-dn.net/?f=%5Cbf%20%5Ctextit%7Bperpendicular%2C%20negative-reciprocal%20slope%20for%20slope%7D%5Cquad%20-%5Ccfrac%7B1%7D%7B2%7D%5C%5C%5C%5C%0Anegative%5Cimplies%20%20%2B%5Ccfrac%7B1%7D%7B%7B%7B%202%7D%7D%7D%5Cqquad%20reciprocal%5Cimplies%20%2B%20%5Ccfrac%7B%7B%7B%202%7D%7D%7D%7B1%7D%5Cimplies%202)
so we're really looking for a line whose slope is 2, and runs through 4,-3,
Answer:
end
January
April
1st blank might also be (account)
The number of unique combinations that can be formed by picking one object from each set is =960. That is option C.
<h3>Calculation of unique combinations of a number set</h3>
Number combination is a mathematical technique that shows the number of possible arrangements in a collection of items.
The first set of objects = 4. There are a total of 4 possibilities.
The second set of objects = 5. There are a total of 5 possibilities
Therefore from first and second set, the total number of possibilities = 4×5 = 20
For the whole set, the total possibilities;
= 4×5×6×8
= 960
Learn more about number combination here:
brainly.com/question/295961
#SPJ1
Answer:
9.8
Step-by-step explanation: