Which property of real numbers is demonstrated by: 15+7+39 = 61 = 7+39+15

Simplify the following, leaving only positive exponents.

What angle is complimentary with 37o ?

Q1. (25 pts) Determine the normal and shear stresses on a crack oriented 50° clockwise to the horizontal at the same location of the element shown. Formula Reference Sheets.pdf

Select number line graph for:

In an equilateral triangle all angles are the same, what is the measure of each angle in degrees?

Four times the first of two consecutive integers minus the second is equal to 101 more than the first. What is the 2nd number?

How many ml of active ingredients are in a standard dose of YGX?

Q1. (25 pts) Draw the shear force and bending moment diagrams for the following beam. Formula Reference Sheets.pdf  

The last person working accidentally made 3L of 35% active ingredient solution, how much water (in ml) does Madison need to add to make it 20% active ingredient? 1000ml=1L