If you have 10 protons, 15 neutrons and 18 electrons what type of charge does the atom have and what is the atomic mass number (P+N= AU) ?

Which statement is always true? a. square bcdf is a rectangle. b. rectangle gjkm is a square. c. quadrilateral stpr is a trapezoid. d. parallelogram abcd is a rhombus.

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

It took alice 5 5/6 hours to drive to her grandparents' house for . on the way home, she ran into traffic and it took her 7 3/8 hours. how much longer did the return trip take? write your answer as a proper fraction or mixed number in simplest form. the trip home took __hours longer. ?