The elevation of a tree's root is -13 feet and spans a radius of 8 feet. if the elevation of the tree is 28 feet with branches that span a radius of 12 feet, what is the total length of the tree from root tip to top?

How many solutions does the nonlinear system of equations graphed below have?

How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?

Which is a logical conclusion based on the given information? a. figure abcd is a rhombus by the definition of a rhombus. b. segment ac is congruent to segment dc by cpctc. c. angle acb is congruent to angle adc by the angle-side-angle theorem. d. triangle acd is congruent to triangle cab by the hypotenuse-leg theorem.