Which ha a faster average rate 200 meters in 25.98 seconds or 100 meters in 12.58 seconds

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0

1. 2. ∠b and ∠y are right angles. 3.? 4.? which two statements are missing in steps 3 and 4? ∠x ≅ ∠c △abc ~ △zyx by the sas similarity theorem. ∠b ≅ ∠y △abc ~ △zyx by the sas similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem.

What is 100,000 times 1/100,000, using the standard method of multiplication? write the answer as 10 to a power.