9514 1404 393
Answer:
Step-by-step explanation:
If we let x and y represent the costs of a lamp and end table, respectively, the two purchases can be written as ...
3x +2y = 520
2x -y = 20
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These equations can be solved many ways. If we use "elimination", we can add twice the second equation to the first to eliminate y:
(3x +2y) +2(2x -y) = (520) +2(20)
7x = 560 . . . . simplify
x = 80 . . . . . . divide by 7
y = 2x -20 = 2(80) -20 = 140
The cost of a lamp is $80; the cost of an end table is $140.
Answer:
The answer u put in the thing is correct!
Step-by-step explanation:
Step-by-step explanation:
I'll just try to help, I'm not so sure
without outlier
mean = (2+8+5+6+20+7)/6
mean= 48/6
mean= 8
with outlier
mean=(4+2+8+5+6+20+7+9)/8
mean=61/8
mean=7.63
without outlier
median=11/2=5.5
with outlier
median=11/2=5.5
without outlier
mode=0
with outlier
mode=0
without outlier
range=20-2=18
with outlier
range = 18
Answer:
5.656854249
Step-by-step explanation: think this is it
