Order of Operation is the step by step procedure that you should follow when solving muti-step equations. Its usally abbreviated as:
P arathesis
Example: 2(5+4)
E xponents
Example: 4^8
M utiply
Example: 5x
D ivide
21/3
A dd
Example: 4+9
S ubtract
Example: 78-21
Answer:
this answer is for functional value only
What you do is get into the form
(x-h)^2+(y-k)^2=r^2
(h,k) is center
r=radis
complete the square with x and y
x^2+y^2-2x+4y-11=0
group x and y terms together
(x^2-2x)+(y^2+4y)-11=0
take 1/2 of linear coefieicnt and add postive and negative
for x^2-2x, -2/2=-1, (-1)^2=1
for y^2+4y, 4/2=2, 2^2=4
(x^2-2x+1-1)+(y^2+4y+4-4)-11=0
complete the square
(x-1)^2-1+(y+2)^2-4-11=0
add like terms
(x-1)^2+(y+2)^2-16=0
add 16 both side
(x-1)^2+(y+2)^2=16
(x-(1))^2+(y-(-2))^2=4^2
(x-h)^2+(y-k)^2=r^2
(h,k)
(1,-2)
r=4
center is (1,-2)
radius is 4 units
Answer:
70 miles were driven this month
Step-by-step explanation:
suppose 100 miles were driven last month
30%= 30/100*100=30 miles
30% decreasewould be 100-30= 70 miles
