A sail on a sailboat can be made from a material called sailcloth. Discount marine sports sells sailcloth for $11.75 per square yard. Jessica models a triangular sail on a coordinate plane with coordinates of the verticals of the triangle at (0,0),(4,0),(3,6). Enter the cost of purchasing the sailcloth for this sail, not including any overlap or stitching and on the sail

associative property hopes this ! : )

step-by-step explanation:

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.