The first three steps for solving the quadratic equation by completing the square are shown fill in the missing number in the last step 9,2 +54 x = 7 90x2+6x) = 7 90x2 + 6x + 9) = 7+

step-by-step explanation: yes

addition

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°

step-by-step explanation: