Compound percentage reduction can be calculated by multiplying the initial number by (1-x)^t where x is the percentage reduction (/100, i.e. 1% reduction is 0.01), and t is the number of times it has reduced.
So:
a)
Where t is the number of weeks.
We can then just substitute in to work out the final pressure:
b) p = 45*0.94^6 =
31psi
Answer:
Step-by-step explanation:
The area of the floor A = Length * Width
Given
A = 200 square meters
If the length of the floor is 32 m longed than it’s width then;
L = 32+W
A = LW
200 = (32+W)W
200 = 32W + W²
W²+32W-200 = 0
W = -32±√32²+800/2
W = -32±42.71/2
W = -32+42.71/2
W = 10.71/2
W = 5.35 m
L = 32+5.35
L = 37.35m
Hence the dimension is 5.35ft by 37.35m
Answer:
A and C
Step-by-step explanation:
Keeping A constant and increasing B.
increasing A and keeping B constant.
Answer:
Step-by-step explanation:
Using the formula for the exponential decay that is , we have N=, and k=0.1374.
Thus, becomes
Taking log on both sides, we get
For this question , you must find the question trouble . For example :
length = 6 inches
width = 9 inches
The question want the dimensions of the poster at one third its current size .
The answer :
: 6 x 3 : 18
: 9 x 3 : 27
: A
# I guess this is the answer :-)