Determine a raiz das equações, sendo U = Q. a.
2x + 4( 38 - x) = 136

b.
10x - 10 -7x - 7 = 4

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c.
9x - 20 = 8( x - 1)

d.
5( 2x + 7) - 1 = 4( x - 5) +9

e.
4x - 8 = 4 + 5x -8

for ex: the reciprocal of 3/4 is 4/3. it is the opposite.

reciprocal definition:

a mathematical expression or function so related to another that their product is one; the quantity obtained by dividing the number one by a given quantity.

$12. that is my answer.

207/8 is the right

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.