What is the ratio for the volumes of two similar pyramids, given that the ratio of their edge lengths is 5: 7?

a. 125: 343
b. 343: 125
c. 49: 25
d. 25: 49

The answer is the option A

Step-by-step explanation:

we know that

The ratio for the volumes of two similar pyramids is equal to the scale factor elevated to the cube

In this problem we have that

The scale factor is equal to

so

The ratio for the volumes of two similar pyramids is equal to

an

y = 6x -3y -12

y +3y +12 = 6x

=> . x = { 2y / 3 +2 } this is equation of line in terms of x

=> . if line meets the x-axis the co-ordinates of meeting point would be ( x , 0 )

=> . x = 2 ( 0 ) / 3 + 2

=> . x = 2

so, the point is ( 2 , 0 )

step-by-step explanation: