If you can solve this problem I will give u all the points don't answer right I will report it and u will not get any of the points here is help
Deciding if a particular knot is the unknot was a major driving force.
n mathematics, the unknotting problem is the problem of algorithmically recognizing the unknot, given some representation of a knot, e. g., a knot diagram. There are several types of unknotting algorithms.

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?

Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 20 = x a. 5, 4 b. -5, -4 c. -5, 4 d. 5, -4

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?