What dose mean x mean in
5x-10=30

" x = 40 "

Step-by-step explanation:

5x = 40

5___5

( x = 8 )

x = 8

Step-by-step explanation:

5(x - 2) = 30

=> 5x - 10 = 30

=> 5x = 30 + 10

=> 5x = 40

=> x = 40/ 5

∴ x = 8

answer: finding the extract measurements and knowing the points

step-by-step explanation:

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°