The average of the weights of six people sitting in a boar is 145 pounds. after a seventh person gets into the boat, the average of the weights of all seven people in the boat is 147 pounds. what is the weights ( in pounds ) of the seventh person ?
a) 160, b) 159, c) 155, d) 149, e) 147

What is the value of x in the this question ?

Solve each quadratic equation by factoring and using the zero product property. 10x + 6 = -2x^2 -2

Part a what is the area of triangle i? show your calculation. part b triangles i and ii are congruent (of the same size and shape). what is the total area of triangles i and ii? show your calculation. part c what is the area of rectangle i? show your calculation. part d what is the area of rectangle ii? show your calculation. part e rectangles i and iii have the same size and shape. what is the total area of rectangles i and iii? show your calculation. part f what is the total area of all the rectangles? show your calculation. part g what areas do you need to know to find the surface area of the prism? part h what is the surface area of the prism? show your calculation. part i read this statement: “if you multiply the area of one rectangle in the figure by 3, you’ll get the total area of the rectangles.” is this statement true or false? why? part j read this statement: “if you multiply the area of one triangle in the figure by 2, you’ll get the total area of the triangles.” is this statement true or false? why?