Answer:
a) the varying densities are to be considered with respect to position
Step-by-step explanation:
the complete answer is found in the attachment
Answer:
The quotient is
answer (D)
Step-by-step explanation:
÷ 
In division with fractions we reverse the fraction after division sign and change division sign to multiplication sine
× 
× 

The rise is the vertical distance between the two points, which is the difference between their y-coordinates. That makes the rise y2 − y1. The run between these two points is the difference in the x-coordinates, or x2 − x1.
Answer:
7a-7
Step-by-step explanation:
2a+2−3a−5+a−4+7a.
Combine like terms
2a-3a+a+7a+2-5-4
7a-7
Answer:
x=7.78
Step-by-step explanation:
142=10x+8x+2
Move all numbers with the same variables to each side to separate them.
142-2=10x+8x
140=18x
Divide by 18.
x= 140/18
x=7.78