Answer:
Step-by-step explanation:
Garden roller is in the shape of cylinder.
So, one revolution = Curved surface area of the cylinder
diameter = 70 cm
radius = 70/2 = 35 cm
h = 100 cm
Curved surface area of the cylinder = 2πrh
= 
= 22000 square cm
Area covered in 15 revolutions = 15 * 22000
= 330000 square cm
2) Coin
diameter = 22 mm
r = 22/2 = 11 mm
Volume of coin = 66 mm
πr²h = 66
Answer:
See below.
Step-by-step explanation:
$32/( 2 hours) = $16/hour
A) $16/hour * 8 hours = $128
B) $16/hour * 20 hours = $320
C) $32/(2 hours) = $16/hour
Answer: 3
Step-by-step explanation:
Let's create a model first.
The initial fee is $19 (this is our y intercept or b)
And the pay per is $4 (this is our variable or m)
y=mx+b
y= 4x+19
To find out what the maximum number of events someone can attend for $31, we plug in different number for the x value until it's less than or equal to $31
In this case, plugging in 3 for x gives us exactly $31
y=4(3)+19= 31
Answer:
it's -6 dollars per year.
Step-by-step explanation:
the expression would be (5-125)/(1995-1975) which would give you the average rate of change.
Answer:
Scientific notation: 4 x 10^10
Expanded form: 40,000,000,000
Step-by-step explanation:
(4 x 10^6) x (1 x 10^4)
(4 x 1,000,000) x (1 x 10,000)
(4,000,000) x (10,000)
40,000,000,000
