Answer:
The answer to your question is there are 56 m²
Step-by-step explanation:
Data
height = 7 m
width = 2 m
length = 4 m
Process
To find the room of the dresser calculate the volume of a rectangular prism.
1.- Write the formula of a rectangular prism
Volume = height x width x length
2.- Substitution
Volume = 7 x 2 x 4
3.- Result
Volume = 56 m²
Y would equal 12 if x were to equal 4. You can think of it as a proportion.
If x represents the width of the poster (including borders), the area of the finished poster can be written as
.. a = x*(390/(x -10) +8)
.. = 8x +390 +3900/(x -10)
Then the derivative with respect to x is
.. da/dx = 8 -3900/(x -10)^2
This is zero at the minimum area, where
.. x = √(3900/8) +10 ≈ 32.08 . . . . cm
The height is then
.. 390/(x -10) +8 = 8 +2√78 ≈ 25.66 . . . . cm
The poster with the smallest area is 32.08 cm wide by 25.66 cm tall.
_____
In these "border" problems, the smallest area will have the same overall dimension ratio that the borders have. Here, the poster is 10/8 = 1.25 times as wide as it is high.
Answer:
Step-by-step explanation:
Answer: Option C
Step-by-step explanation:
In group(1), the risk is= 5/2000 x 100
= 0.25
In group(2), the risk is= 5/1000 x 100
= 0.5
The sample relative risk is= 0.25/0.5
= 0.5
So, option C is correct.
