4.5 times what, equals 30

See attachment below and find the equivalent of tan(∠qsr)

Zack notices that segment nm and segment pq are congruent in the image below: which step could him determine if δnmo ≅δpqr by sas? (5 points) segment mo ≅ segment qr segment on ≅ segment qp ∠ n ≅ ∠ r ∠ o ≅ ∠ q

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.