Thats easy .
the 2 figures aren't the same because they're both not the same size and one
figure covers up more cubic units than the other. Also they both have different
coordinates.
(2x+1)=Jeremy´s age
(2x+3)=Sam´s age.
we suggest this equation:
(2x+1)(2x+3)=783
4x²+6x+2x+3=783
4x²+8x-780=0
x²+2x-195=0
We solve this quadratic equation:
x=[-2⁺₋√(4-4*1*(-195))]/2=(-2⁺₋28)/2
x₁=(-2-28)/2=-15 this solution is not valid.
x₂=(-2+28)/2=13
Jeremy´s age=2x+1=2*13+1=27
Sam´s age=2x+3=2*13+3=29
Answer:
a.
b.
Step-by-step explanation:
We are given that


a.Substitute z=0
...(1)
..(2)
Subtract equation (1) from equation (2)


Substitute y=0 in equation(1)

The point (6,0,0) lie on a line.

Let 



Therefore, the vector 
Line is parallel to vector a' and passing through the point (6,0,0).
The parametric equation is given by

Using the formula
The parametric equation is given by

Angle between two plane

and 

Using the formula



Where
in degree.