A researcher determined that there was no relationship between a ravens wingspan and its weight

Ahiker stands at an unknown elevation before he ascends 2 miles up a mountain to an elevation of 9 miles. find the elevation of the hiker before his ascent.

Plz ( true - false) all triangles have interior angles whose measure sum to 90.

Type the correct answer in each box. spell all the words correctly, and use numerals instead of words for numbers. if necessary, use / for the fraction bar(s).