Answer:
Step-by-step explanation:
Given expression:
To evaluate the expression.
Solution.
The values are
Let 
-----------1
Multiplying 10 both sides.
----------2
Subtracting 1 from 2.
-
-------------------------------------------
Dividing both sides by 9.
Let 
Multiplying both sides by 100
------------3
Multiplying 1000 both sides.
----------4
Subtracting 3 from 4.
- 
-------------------------------------------
Dividing both sides by 900.
So, we can evaluate the given expression as:
⇒
⇒ 
⇒ 
Taking LCD = 900
⇒ 
⇒ 
Adding numerators.
⇒ 
⇒ 
⇒ 
(Answer)
Answer:
the rate of change of the area is Ra= 80 mm² per second
Step-by-step explanation:
the area of a rectangle (A) is
A = L * W , L= length and W= width
if the width remains constant the change in the area is only due to the change in length , thus:
ΔA = Δ( L * W ) = W * ΔL , where ΔA represents the change in area and ΔL represents the change in length
ΔA = W ΔL
denoting Δt as the time required to change, and dividing both sides by Δt
ΔA/Δt = W ΔL/Δt
where Ra=ΔA/Δt = rate of change of the area and RL=ΔL/Δt rate of change of the length.
thus
Ra = W * RL
replacing values
Ra = W * RL = 8 mm * 10 mm/second = 80 mm² /second
Answer: 15
Step-by-step explanation: 3:4 5x4=20 5x3=15 15:20
Answer:
it's D. I think 105 cubic feet
1.7,5-1,5=6
2.10-11=-1
3.6×-1=-6
4.-6+2=-4
