Average of 4 numbers, if the numbers are x,y,z,t then the average is (x+y+z+t)/4=average so
average=98
if 3 of the numbers are 86, 87 and 91 then what is the fourth number
assign
x=86
y=87
z=unknown
91=t
(86+87+z+91)/4=98
do parenthasees first
(264+z)/4=98
multiply both sides by 4 to get rid of fraciton
264+z=392
subtract 264 from both sides
z=128
the fourth number=128
Answer:
reflect over y translate 6 down
Step-by-step explanation:
when we reflect over y it puts the figure right above the other one so we need to translate down
Answer: D) (3, 1.5)
Step-by-step explanation:
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Below are the choices that can be found elsewhere:
16.8 months
7.2 months
12.0 months
<span>1.4 months
</span>the ratio of cash to monthly cash expenses is 16.8 months
It means the system is inconsistent, which is another way to way, there's no solution, namely, both graphs do not intersect ever, and therefore there's no common point with such x,y pair for both.
