determine the value of x for which r ∥ s if?

m∠1 = 60 – 2x; and
m∠2 = 70 – 4x.

10

5

50

4

Step-by-step explanation:

m∠1 = m∠2            {r ║s , so, corresponding angles are equal}

60 – 2x  =  70 – 4x

  4x - 2x = 70 -60

         2x = 10

           x = 10/2

           x = 5

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see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2