3.1 ft 5ft 3ft 3.1ft 2.7 ft helppp​

Plz which expression is equivalent to the expression below?

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

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