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kellysmith45
05.12.2021 •
Mathematics
Sara works for a hair salon and receives tips from her customers. The weekly tips
(in AED) she received for 7 weeks are 200, 150, 100, 75, 60, 70, and 100.
a) Find the mean.
b) Find the median.
c) Find the range.
d) Find the mode.
Solved
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Ответ:
mean: 107.86
median: 100
range: 140
mode: 100
Step-by-step explanation:
Ответ:
Washing cars= 4 hours
Walking dogs= 10 hours
Step-by-step explanation:
You want to start by creating equations. So one thing we know is that he makes $9 an hour washing cars(x) and $8 walking dogs(y).
$9x+$8y=$116
The second Equation is based off of the hours worked. We know that he worked 6 hours more walking the dogs than he did washing cars, so we can take x(being the washing hours) and add 6 to it to equal y (the number of dog hours).
y=x+6
Now You plug what y equals into the first equation to solve for x.
9x+8(x+6)=116 Next distribute the 8 to each term.
9x+8(x)+8(6)=116
9x+8x+48=116 Add the like terms together (9x+8x)
17x+48=116 Subtract the 48 from both sides
-48 -48
17x=68 Now divide by 17 on both sides.
17 17
x=4 Finally we can take x and plug it back in to one of the equations in order to solve for y. I'm going to choose the second equation.
y=(4)+6
y=10