Answer:
B ±sqrt((y-k)/a ) + h= x
Step-by-step explanation:
y=a(x-h)^2+k
Subtract k from each side
y-k = a(x-h)^2+k-k
y-k = a(x-h)^2
Divide by a
(y-k)/a = a(x-h)^2/a
(y-k)/a = (x-h)^2
Take the square root of each side
±sqrt((y-k)/a )= sqrt((x-h)^2)
±sqrt((y-k)/a )= (x-h)
Add h to each side
±sqrt((y-k)/a ) + h= (x-h+h)
±sqrt((y-k)/a ) + h= x
Calculator display for 
= 0.75
calculator display for 
= 0.41667
Calculator display for 
= 0.5833
Step-by-step explanation:
Calculator display for is 0.75
Yes , it is the exact decimal equivalent.
= 0.75
9 ÷ 12
=3 ÷ 4
= (3 × 25) ÷( 4 × 25)
= 75 ÷ 100
= 0.75
calculator display for = 0.41667
= 0.41667
It is not the exact decimal equivalent.
5 ÷ 12 = (5 × 8.35) ÷ ( 12 × 8.35)
= 41.75 ÷ 100.2
= 0.41667
Calculator display for = 0.5833
It is not the exact decimal equivalent.
7 ÷ 12 = ( 7 × 8.35) ÷ ( 12 × 8.35)
= 58.45 ÷ 100.2
= 0.5833
Answer: 28
Step-by-step explanation:
Let the number of balloons that she had last party be represented by x.
Since Mrs.Hines has 40 ballons for a party which was 12 more balloons than she had for her last party. The number of ballons had last party will be formed into an equation as:
x + 12 = 40
Collect like terms
x = 40 - 12
x = 28
She had 28 balloons last year
It takes Selma 1/6 of a hour to run 3/4 miles.
Just multiply 3/4 by 6 to get 18/4 which is 4.5 miles or 4 1/2 mile
Answer:
480km
Step-by-step explanation:
2km=2000m
8*60=480 minutes
480/2=240minutes
2000*240=480000
480000/1000=480km
