Answer:

Step-by-step explanation:
Given:

using the properties of log we can take the power 1/2 and multiply it.

now we can differentiate:



this is our answer!
X-0.075x=7400
Solve for x
0.925x=7400
x=7,400÷0.925
X=8,000
Answer:
Step-by-step explanation:
Accessories: x
Bike: 4x
Total1: 5x
Total2: 140 dollars.
x + 4x = 140 dollars
5x = 140
x = 28
Accessories: 28
Bike: 112
Answer:
14
Step-by-step explanation:
2(l+b)
2(3+4)
2(7) now do multiply
answer 14m
Answer:
2
Step-by-step explanation:
Perimeter of a rectangle = 2(length + breadth)
=> 2{2x + (x + 4)) = 20
=> (2x + x + 4) = 20/2 = 10
=> 3x + 4 = 10
=> 3x = 10 - 4 = 6
=> x = 6/3 = 2
Here, according to the diagram
Length = 2x = 2(2) = 4
Breadth = x + 4 = 2+4 = 6
But breadth should always be lesser than the length. From this, it can be concluded that the actual breadth is 2x and actual length is x + 4, for perimeter to be 20.