Q5:
The table below shows the total park acres per 1,000 residents for 6 cities in 2010.

Total Park Acres per 1,000 residents
0.8 1.0 2.7 2.8 3.1 13.3

Part A
What is the mean of this data set?

Part B
What is the median of this data set?

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Ответ:

alienfacetimelol

09.12.2022

Mathematics

cost to rent each chair=$1.75, cost to rent each tabble=$10.75

Step-by-step explanation:

Hello, I can help you with this

Step 1

Define

cost to rent a chair=x

cost to rent a table=y

9x=total cost for rent 9 chair

7y = total cost for rent 7 tables

a)The total cost to rent 9 chairs and 7 tables is $91.

in mathematical terms it is

9x+7y=91....equation 1

b) The total cost to rent 3 chairs and 5 tables is

3x+5y=59.... equation 2

and you have 2 equation and 2 unknown terms

let's solve this

from equation 1 isolate x

$9x+7y=91\\9x=91-7y\\x=\frac{91-7y}{9}\\ \\$

from equation 2 isolate x

$3x+5y=59\\3x=59-5y\\x=\frac{59-5y}{3}$

now, x= x, so

$x=\frac{91-7y}{9}\\\\\\x=\frac{59-5y}{3} \ \\\ \frac{91-7y}{9}=\frac{59-5y}{3}\\ 3(91-7y)=9(59-5y)\\273-21y=531-45y\\273-531=-45y+21y\\-258=-24y\\y=\frac{258}{24}\\ y=10.75\\$

now, we know y, use it to find x

$x=\frac{59-5y}{3}\\x=\frac{59-5(10.75)}{3}\\x=\frac{59-53.75}{3}\\\\x=\frac{5.25}{3}\\ x= 1.75\\$

Have a nice day

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Q5: The table below shows the total park acres per 1,000 residents for 6 cities in 2010. Total Park Acres per 1,000 residents 0.8 1.0 2.7 2.8 3.1 13.3 Part A What is the mean of this data set? Part B What is the median of this data set?