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The answer would be x= 68 degrees
The least-square regression line has a slope of:
m=(nΣxy-ΣyΣx)/(nΣx²-ΣxΣx)
and a y-intercept of:
b=(Σy-mΣx)/n
In this case: n=7, Σxy=4899, Σy=391, Σx=85, Σx²=1153 so
m=(7(4899)-391*85)/(7(1153)-85*85))=1058/846
b=(391*846-85*1058)/(7*846)=34408/846
So the line of best fit is:
y=(1058x+34408)/846 and if we approximated this as your answers see to have done....
y=1.25x+40.67
Answer:
$63
Step-by-step explanation:
- Penny = $0,01
- Nickel = $0.05
- Dime = $0.1
- Quarter= $0.25
- Number of pennies = 6*50 = 300
- Number of nickels = 5*40= 200
- Number of dimes = 4*50= 200
- Number of quarters = 3*40 = 120
<u>Total amount of money:</u>
- 300*0.01+ 200*0.05 + 200*0.1 + 120*0.25 = $63
Answer:
nonagon
Step-by-step explanation:
The correct name for a 9-sided polygon is <u>nonagon</u><u>.</u>
