How do i do this problem?
(similar triangles)

x = -78

Step-by-step explanation:

Write and solve an equaiton of ratios, as follows:

hypotenuse to hypotenuse:

         57                 51

  =

      2x + 7             x + 4

Cross-multiplying, we get:

57x + 228 = 102x + 351

Combining the x terms on the right, we get:

          228 = 45x + 351

Combining the constants on the left:

           -123 = 45x, and so x = -123/45 = -78

x = -78

step-by-step explanation:

this is not possible to solve with the info given.   you need at least an one angle somewhere.

b. 6

step-by-step explanation:

we are given the table representing an exponential function.

we can see from the table that, as x is increasing, the value of y is increasing in the power of 6.

i.e. the following relation is obtained,

x = 1, y = 6

x = 2, y = 36 =

x = 3, y = 216 =

x = 4, y = 1296 =

x = 5, y = 7776 =

so, the geometric series obtained is .

thus, the common ratio is given by = = 6.

hence, the common ratio is 6.