4 minutes 34 seconds will takes to empty the tank, if the starts completely full and oil drained at a rate of 2.5 
per minute.
Step-by-step explanation:
The given is,
Tank is shaped like a cylinder that is 3 ft long with a diameter of 2.2 ft.
Oil drained at a rate of 2.5 per minute.
Step:1
Time taken to dry the oil tank is,
T = 
....................................(1)
Step:2
Volume of the oil is,
.................................................(2)
Where, r - Radius of Cylinder
r = 1.1 ft
From eqn (1),
V = 
× 
× 3
= 11.40398
Step:3
From equation (1)
= 
= 4.56
= 4.56 minutes
T = 4 minutes 34 seconds
Result:
Time taken to dry the oil tank is 4 minutes 34 seconds, if a cylinder is 3 ft long with a diameter of 2.2 ft and oil is drained at a rate of 2.5ft^3 per minute.
Given that the area is equal to twice the perimeter and the dimensions are:
length=4x ft, width=(x+6) ft
the perimeter will be:
P=2(L+W)
P=2(4x+(x+6))
P=2(4x+x+6)
P=2(5x+6)
P=(10x+12)
Area of the rectangle is:
A=4x(x+6)
A=4x²+24x
but:
2P=A
thus
2(10x+12)=4x²+24x
20x+24=4x²+24x
thus
4x²+4x-24=0
x²+x-6=0
x²-2x+3x-6=0
x(x-2)+3(x-2)=0
(x-2)(x+3)=0
thus the answer is:
x=-3 or x=2
thus
length=4x=4*2=8 ft
width=(x+6)=(2+6)=8 ft
Answer:
58/100
Step-by-step explanation:
50 times 2 is 100, so we multiply the other number by 2 because what you do to the bottom you do to the top.
29 times 100 is 58
your answer is 58/100
Answer:
x=12
y=20
Step-by-step explanation:
<u>the</u><u> two</u><u> triangles</u><u> are</u><u> congruent</u><u> </u>
according to the question
x+18=6x-42
6x-x=18+42
5x=60
x=12
if two triangles are congruent the included Angeles are equal
so
y+22=3y-18
3y-y=22+18
2y=40
y=20
A caste system is a class structure that is determined by birth. Loosely, it means that in some societies, if your parents are poor, you're going to be poor too. The same goes for the rich.
