How I can answer this question, NO LINKS, if you answer correctly I will give u brainliest!

4. a spring scale is constructed so that each 0.10-n increment is separated by 0.50 cm. what spring constant is necessary for the scale to be accurate? -1.0n/cm -0.10n/cm -9.8 n/cm -0.20n/cm

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

In the 30-60-90 triangle below side s has a length of and side r has a length