What is the least common denominator of the rational expressions below 4/x^2-7x + 1/x^2-4x-21 a. x(x-7)
b. x(x-7)(x+3)
c. x(x-7)(x-7)(x+3)
d. x(x+3)

c

c

c

c

c

c

c

cc

c

step-by-step explanation:

c

step-by-step explanation:

the height of the surface increases from the center out to the sides of the road.

step-by-step explanation:

as we move out we move away from the x-axis.

and as mentioned in the problem statement that height of a road increases when we move away from the center x.

hence proved that 3rd option

the height of the surface increases from the center out to the sides of the road.

is the correct option.

  answer:

  write 548 as 500 + 40 + 8. multiply each addend by 5. then add the three products to get 2,740.