The temp at the summit of mt. mansfield dropped 17 degrees f between 4 pm and 11 pm. if the temp at 11 pm was -11 degrees f, what was the temp at 4 pm?
show work! so much!

What is the answer to this problem 7 * 5/6

Ageologist had two rocks on a scale that weighed 4.6 kilograms together.rock a was 0.5 of the total weight.how much did rock a weigh?

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?